Treatment of scabies: medications, treatment plan for skin, family and things

Scabies is a parasitic skin disease caused by the mite Sarcoptes scabiei var. hominis. The female mite burrows into the upper layer of the skin, lays eggs, and within a few weeks, the body responds with a severe allergic reaction: itching, papules, scratching, and sometimes visible burrows. Therefore, treatment should kill not only the adult mites but also any mites that emerge from the eggs after the first treatment. [1]

The main mistake with scabies is treating it as a regular itchy rash and only applying it to the itchiest areas. Anti-scabies products should be applied to all skin as directed, as mites may be present in areas other than the most itchy areas. The British Association of Dermatologists specifically emphasizes that the product should be applied to all areas of the skin, not just the visible rash. [2]

The second common mistake is treating only one person. With scabies, it's important to treat all close contacts simultaneously: family members, sexual partners, and people who have had prolonged close skin contact. The World Health Organization points out that due to the asymptomatic period, an infected person can transmit scabies even before itching appears, so contact treatment is necessary even in the absence of complaints. [3]

The third mistake is to consider itching after treatment as evidence of failure. After proper treatment, itching can persist for several weeks because the immune system is still reacting to residual mite proteins, feces, and skin damage. DermNet emphasizes that itching after treatment can last for several weeks and does not, in itself, indicate an active infection. [4]

The modern approach to scabies treatment consists of four components: confirming the diagnosis, prescribing an anti-scabies medication, treating the contact areas, and sanitizing linens, clothing, and objects that have come into contact with the skin. If even one of these components is omitted, a person may not develop "resistant scabies" but rather a simple reinfection from an untreated source. [5]

The treatment objective	What does this mean in practice?	Why is this important?
Destroy ticks	Use permethrin, ivermectin, or another prescribed medication	Without an anti-scabies remedy the disease does not go away reliably
Repeat the treatment	Re-treatment is usually needed after 7-14 days.	Many preparations do not kill mite eggs well.
Treat contacts	Treat family and sexual partners simultaneously	Otherwise, re-infection is possible.
Process things	Wash or isolate linens, clothes, towels	Ticks can survive outside the skin for several days.
Control itching	Do not confuse post-scabies itching with treatment failure	Itching may persist after the mites are destroyed.

The table summarizes key principles that are echoed in recommendations from the World Health Organization, the US Centers for Disease Control and Prevention, and dermatology guidelines.[6] [7]

When the diagnosis needs to be clarified before starting therapy

Classic scabies most often presents with intense itching that intensifies in the evening and at night. Typical areas include the spaces between the fingers, wrists, elbows, armpits, waist area, buttocks, external genitalia, nipples, and lower abdomen. In infants and young children, the rash may be more widespread and affect the palms, soles, ankles, and scalp. [8]

The diagnosis is often made clinically: based on the characteristic itching, the location of the rash, the presence of similar symptoms in close contacts, and visible scabies burrows. The International Scabies Alliance has proposed criteria that divide the diagnosis into confirmed, clinical, and suspected; this helps distinguish scabies from eczema, atopic dermatitis, urticaria, insect bites, and bacterial skin infections. [9]

Confirmation of the diagnosis is especially desirable if the rash is atypical, treatment has already been tried and failed, itching is limited to one person without any contact, crusting is prominent, a purulent process has developed, or the patient is in a high-risk group. In such cases, the doctor may use dermatoscopy, microscopic examination of a scabies burrow scraping, or other methods to visually confirm the presence of the mite, eggs, or fecal matter. [10]

Self-medication is dangerous not only because of the risk of using the wrong medication but also because of the risk of missing other conditions. Severe itching can be caused by atopic dermatitis, contact dermatitis, drug reactions, pediculosis, fungal infections, renal failure, cholestasis, hematological diseases, and psychogenic disorders. Therefore, if the condition is atypical, it is best to confirm the diagnosis in person with a dermatologist. [11]

Treating scabies "just in case" is only acceptable in isolated situations where there is a typical clinical picture and clear contact with a confirmed case. But even then, the regimen must be complete: medication, repeat treatment, contacts, and items. Incomplete therapy creates the illusion of drug resistance, although more often the cause of failure is application errors, missed contacts, or reinfestation. [12]

Situation	What is more likely?	What to do
Nighttime itching and similar rash in several family members	Scabies is very likely	Treat all contacts at the same time
Itching without rash immediately after contact	Early period is possible	Observation or preventive therapy at the discretion of the physician
Crusts, thick scales, mild itching	Crusted scabies is possible	See a dermatologist immediately, I need an enhanced regimen.
Itching persists for 2-4 weeks after treatment	Post-scabies itching may occur.	Evaluate your skin and don't rush to repeat toxic products.
New passages and fresh papules after 2-4 weeks	Treatment failure or re-infection is possible.	Check contacts, application technique and purpose

Assessment of symptoms is not needed to delay treatment, but to select the correct regimen and exclude conditions that require a different approach. [13]

Main drugs for the treatment of scabies

Permethrin 5% remains one of the main first-line treatments for classic scabies. The U.S. Centers for Disease Control and Prevention recommends that permethrin 5% cream be applied to all skin areas from the neck down and washed off after 8-14 hours; the drug is approved for the treatment of scabies in people 2 months of age and older. [14]

In practice, permethrin is often applied twice, approximately 7 days apart, although some instructions may call for a single treatment. The reason for repeat treatments is simple: even effective products may not be effective enough against tick eggs, so a second course is needed to kill young ticks after hatching. The US Centers for Disease Control and Prevention specifically notes that two or more applications, approximately a week apart, may be necessary to completely eliminate ticks. [15]

Ivermectin is a systemic medication taken orally at a dose of 200 micrograms per kilogram of body weight, usually in two doses 7-14 days apart. It is useful when proper application of the cream is impossible, during institutional outbreaks, in cases of multiple exposures, and for crusted scabies, but its safety in pregnant women and children weighing less than 15 kilograms remains limited in official recommendations. [16]

A Cochrane review found that most comparisons found little difference between permethrin and ivermectin in efficacy, but the quality of evidence in many studies was low to moderate. More recent data from 2024 on treatment failures suggest that two doses of ivermectin are associated with a lower failure rate than one dose, which is important to consider when designing regimens.[17][18]

In 2026, a large randomized trial was published in which oral ivermectin failed to demonstrate non-inferiority compared to 5% permethrin, and permethrin showed a statistical advantage in clinical cure at 28 days. This does not mean that ivermectin is a "bad" drug; it means that the choice of therapy should take into account the type of scabies, the ability to properly apply the cream, exposure, age, pregnancy, body weight, and the risk of reinfestation. [19]

Preparation	Typical role	A scheme that is often used	Important limitations
Permethrin 5%	First line for classic scabies	Apply to skin for 8-14 hours, repeat frequently after 7 days	The correct application technique is required
Ivermectin orally	Alternative or part of a combined scheme	200 micrograms per kilogram, 2 doses 7-14 days apart	Use with caution during pregnancy and if you weigh less than 15 kilograms.
Benzyl benzoate	An alternative in a number of countries	The regimen depends on the concentration and local instructions.	May irritate skin
Sulfur ointment 5-10%	Option for infants and pregnant women in some schemes	Apply for several nights in a row	Unpleasant smell, stains laundry
Crotamiton	Alternative remedy	As per doctor's instructions	Frequent treatment failures have been reported.

The choice of drug should be made by a physician or pharmacist, taking into account local availability, age, pregnancy, body weight, concomitant diseases and the risk of misuse. [20]

How to apply a topical product correctly

Proper application of a topical product is often more important than choosing between similarly effective products. The product should cover all skin, including areas often overlooked: between fingers, under nails, wrists, elbows, armpits, groin, buttocks, external genitalia, feet, skin behind the ears, and areas under jewelry. [21]

Before applying, it is advisable to trim your nails short, as mites, eggs, and dirt from scratching can remain under the nails. The British Association of Dermatologists recommends paying special attention to the skin under the nails, between the toes, the genitals, behind the ears, nipples, and soles. [22]

The product is typically applied in the evening to clean, cool, and dry skin. Applying the product immediately after a hot shower may increase irritation and absorption, making it more difficult to tolerate the product for the recommended time. After application, allow the product to dry, put on clean clothing, and leave the product on the skin for the number of hours indicated in the instructions. [23]

If a person washes their hands, goes to the toilet, changes a child's diaper, or washes the product off an area while the product is active, they should reapply it to that area. This is especially important for the hands, as the spaces between the fingers and the wrists are typical areas for scabies. Missing the hands is a common reason for the apparent ineffectiveness of treatment. [24]

In adults, the standard instructions often state "from the neck down," but in real-world clinical practice, infants, young children, the elderly, immunocompromised individuals, and those with suspected crusted scabies may require treatment of the head, neck, skin behind the ears, and face, avoiding the area around the eyes and mouth. This treatment scope should be discussed with a physician, as the risk of scalp involvement depends on age and the type of disease. [25] [26]

Step	What to do	A common mistake
Preparation	Trim your nails, remove jewelry, prepare clean clothes	Leave the rings on and do not treat the skin underneath them.
Application	Cover the entire skin according to the instructions.	Apply only to itchy spots
Time of action	Leave the preparation on for 8-14 hours or as per instructions	Wash off too early
Hands	Reapply after washing hands.	Forgetting to restore the drug layer
Repeat	Repeat the course on the appointed day	Skip the second treatment

The application technique is one of the main factors for success, so it is better for the patient to receive a written plan in advance rather than relying on memory. [27]

Treatment of family, partners and close contacts

Treating a single patient without treating their contacts often results in reinfection. The World Health Organization recommends that all household members be treated, even if they are asymptomatic. This is because itching during the initial infection may not appear until 4-6 weeks later, but transmission is already possible. [28]

By "contacts" we mean not just random people, but those who have had prolonged, close skin-to-skin contact: family members, people living in the same apartment, sexual partners, caregivers, and sometimes roommates in a dormitory or long-term care facility. With crusted scabies, the circle of contacts is wider because the contagiousness is much higher. [29]

The ideal regimen is to select one evening when all contacts simultaneously apply the topical treatment or take the prescribed medication. If one person is treated today, the second five days later, and the third is not treated at all, the infection can circulate for weeks. DermNet explicitly emphasizes the need for all household members to complete the treatment simultaneously. [30]

Sexual contact is especially important because scabies is often transmitted through prolonged skin-to-skin contact. It is best to avoid close skin-to-skin contact until the initial treatment is completed and linens are changed. Institutions, schools, and care settings typically allow return visits after 24 hours from the first dose of treatment if the individual can avoid close contact and preventive measures have been followed. [31]

If any of the contacts are pregnant, breastfeeding, under two months old, weigh less than 15 kilograms, have severe liver disease, or are immunocompromised, they cannot simply be "given the same." For such individuals, a specific regimen is selected, often with a preference for topical agents considered safer for the specific group. [32] [33]

Who should be treated simultaneously?	Why	Comment
Family members	High risk of latent infection	Treat even without itching
Sexual partners	Prolonged skin-to-skin contact	Synchronous therapy is needed
Roommates	Close household contact is possible	It is decided depending on the situation
Caregivers	Frequent contact with skin and underwear	Especially important for elderly and bedridden patients
Contacts for crusted scabies	Very high contagiousness	Medical and epidemiological tactics are needed

Simultaneous treatment of contacts is not an additional measure, but a mandatory part of scabies treatment. [34]

Treatment of linen, clothing and home

The scabies mite usually dies within 2-3 days outside the human skin, but this is sufficient time for reinfestation to occur through linens, towels, or clothing, especially if treatment is improper. The World Health Organization recommends washing and drying items that have come into contact with an infested person, and isolating items that cannot be washed in a plastic bag for a week. [35]

The American Academy of Dermatology recommends washing clothing, bedding, towels, and washcloths on the day of treatment, using the hottest water possible, and then drying them on a hot setting in a dryer. If an item cannot be washed and dried, it can be dry-cleaned or sealed in a plastic bag for at least 1 week. [36]

There's no need to treat your apartment with harsh insecticides, spray mattresses with toxic chemicals, or treat your pets. The American Academy of Dermatology specifically notes that the human scabies mite does not survive on animals, so pets do not need treatment for human scabies. [37]

On the day of treatment, it's practically sufficient to change bedding, clothing, and towels, wash clothes, vacuum carpets and upholstered furniture, and isolate non-washable items. With common scabies, transmission through objects is less significant than direct skin-to-skin contact, but with crusted scabies, environmental contamination becomes much more important due to the large number of mites. [38]

Particular caution is needed in care homes, hospitals, boarding schools, dormitories, and other closed institutions. The UK's Health Safety Agency emphasizes that in the event of outbreaks in institutions, coordination of treatment, personal protective measures for staff, and an agreed-upon end date are essential, otherwise the outbreak may persist. [39]

Item	What to do	When
Bed sheets	Wash with hot water and dry on a hot setting	On the day of treatment
Towels and washcloths	Wash separately or with laundry	On the day of treatment
Clothing of the last days	Wash or isolate	On the day of treatment
Non-washable items	Seal in a bag for at least 1 week.	Immediately after the start of therapy
Carpets and upholstered furniture	Vacuum	On the day of treatment

Sanitation is not a substitute for medication, but without it, the risk of re-infection and the mistaken conclusion that the drug “doesn’t work” increases. [40]

Special groups: children, pregnant women, the elderly and people with immunodeficiency

In children, scabies may present differently than in adults. The rash is more widespread and can affect the palms, soles, ankles, and scalp, and scratching is more easily complicated by bacterial infection. Therefore, it is especially important for children to select a medication appropriate for their age and apply it strictly according to the pediatric regimen. [41]

Permethrin 5% is considered acceptable from 2 months of age, and sulfur ointment 5-10% is considered an option even for infants younger than 2 months in some guidelines. The U.S. Centers for Disease Control and Prevention (CDC) indicates that sulfur ointment is safe for topical use in children, including infants younger than 2 months, although it is less convenient due to its odor and consistency.[42]

Pregnancy requires caution. For pregnant and breastfeeding women, topical treatments, primarily permethrin, are often preferred, as systemic ivermectin has less safety data in these groups. DermNet notes that 5% permethrin is considered safe during pregnancy and breastfeeding, while oral ivermectin is generally not recommended during pregnancy. [43]

In older people, scabies can be atypical: the itching is sometimes less pronounced, the skin is dry, there are many associated dermatoses, and scratches become infected more quickly. Bedridden patients, people with dementia, neurological diseases, and compromised immune systems are at higher risk of crusted scabies, in which the mites can be thousands or millions of times more numerous than in the common form. [44]

In immunocompromised individuals, including those with severe chronic illnesses, those taking immunosuppressive medications, those living with human immunodeficiency virus (HIV), or those in long-term care facilities, if crusted scabies is suspected, treatment should be medically directed and more intensive. This form can be dangerous to the patient and highly contagious to others. [45] [46]

Group	Preferred approach	What to avoid without a doctor's advice
Children over 2 months	Often permethrin 5%	Unauthorized adult scheme
Infants under 2 months	Individual regimen, often sulfur preparations	Ivermectin without strict indications
Pregnant women	Usually topical therapy, often permethrin	Unauthorized ivermectin
Breastfeeding women	Local therapy according to the instructions	Apply to the area in contact with the child's mouth
Immunodeficiency and old age	Low threshold for seeking medical attention	Tightening with crusts and mild itching

Special groups should not be treated with a “universal” regimen from the internet: safety, age restrictions and complication control are more important here. [47]

Crusted scabies: why it's a separate issue

Crusted scabies, formerly known as Norwegian scabies, is a severe form in which thick crusts and scales form on the skin, and mite infestations can be extremely high. Paradoxically, itching in this form can be mild or absent, so the condition is sometimes long mistaken for psoriasis, eczema, seborrheic dermatitis, or hyperkeratosis. [48]

This form is especially dangerous in long-term care facilities, hospitals, nursing homes, and families with elderly or immunocompromised patients. The World Health Organization emphasizes that crusted scabies is very easily spread and can cause secondary infections. [49]

Treatment for crusted scabies typically involves a combination of topical antiscabies medication, oral ivermectin, and sometimes keratolytic agents to soften the crusts, along with multiple courses of therapy. The Centers for Disease Control and Prevention (CDC) recommends that for crusted scabies, permethrin should be applied to the entire body and used in conjunction with the oral medication; application frequency can vary from daily to every 2-3 days for the first 1-2 weeks. [50]

Keratolytics are not used to kill the tick, but to remove the thick crusts that prevent the product from penetrating the skin. This is especially important on the palms, soles, around the nails, and other areas with severe hyperkeratosis. The Centers for Disease Control and Prevention (CDC) guidelines recommend keratolytics as an additional measure to improve permethrin penetration. [51]

For crusted scabies, home treatment "as for ordinary scabies" is not sufficient. A dermatologist, infestation monitoring, assessment of bacterial complications, coordination of contacts, and sometimes the involvement of public health specialists are needed. The UK Health Safety Agency advises that patients with crusted scabies may require combination treatment with permethrin and ivermectin, and the decision to stop infestation should be made by a specialist. [52]

Sign	Common scabies	Crusted scabies
Number of ticks	Usually a little, often 10-15	Thousands or millions
Itching	Usually pronounced, worse at night	May be weak or absent
Skin type	Papules, scratches, passages	Thick crusts, scales, hyperkeratosis
Contagiousness	High in close contact	Very high
Treatment	Usually topical therapy or ivermectin	Combination and multiple therapy

Crusted scabies is not "severe common scabies" but a distinct clinical entity with an increased risk of outbreaks and complications.[53]

Itching after treatment: normal, complication or treatment failure

Post-treatment itching may persist for 2-4 weeks, sometimes longer, especially if there was intense scratching, dry skin, irritation from medications, or secondary eczema before treatment. This condition is called post-scabies pruritus. It is not caused by live mites, but by an ongoing inflammatory and allergic reaction of the skin. [54]

During the first 1-2 weeks, itching may even seem more intense, and this doesn't always mean worsening. The World Health Organization notes that itching often intensifies 1-2 weeks after starting treatment. Therefore, repeating the medication daily without a doctor's prescription is not recommended, as it can cause irritant dermatitis and worsen itching. [55]

To relieve itching, your doctor may recommend moisturizers, gentle cleansing products, a short course of topical anti-inflammatory medications, second-generation antihistamines, or treatment for secondary eczema. The 2024 guidelines indicate that after effective treatment, itching usually gradually decreases, but complete resolution may take up to 4 weeks; for eczema following scabies, antihistamines and topical corticosteroids may be used.[56]

Treatment failure should be suspected if, after 2-4 weeks, new scabies burrows appear, new papules appear in typical locations, the itching worsens in several family members, new infected contacts are discovered, or it turns out that someone in the family has not been treated. In such cases, it's important not just to repeat the treatment, but to analyze the entire chain: the regimen, application, repetition, contacts, and items. [57]

If, after treatment, pustules, soreness, oozing, yellow crusts, fever, red, painful streaks on the skin, or a worsening general condition appear, a bacterial complication should be considered. The World Health Organization notes that scratching and disruption of the skin barrier associated with scabies can lead to impetigo, abscesses, septicemia, and, in some cases, kidney damage and rheumatic heart disease. [58]

What happens after treatment?	A probable explanation	What to do
The itching gradually decreases, but lasts up to 4 weeks.	Post-scabies itching	Skin care and control
The itching got worse in the first few days.	Possible inflammatory reaction	Do not exceed the prescribed dosage; discuss symptomatic treatment.
New moves have appeared	Active scabies is possible	Physician re-evaluation
All family members itch	Probably the contacts were not treated	Concurrent contact therapy
Pus, pain, oozing	Bacterial infection	Need a doctor, sometimes antibiotics

The main criterion for success is not the immediate disappearance of itching, but the cessation of the appearance of new burrows and rashes, gradual improvement of the skin and the absence of new cases among contacts. [59]

Why treatment sometimes doesn't work

The most common cause of treatment failure is not true drug resistance of the mite, but improper adherence to the regimen. The patient may apply the cream only to the itchy areas, wash it off too early, forget about the hands and feet, fail to repeat the treatment, fail to treat the partner, or fail to change the underwear. All these errors create the impression that "scabies is incurable." [60]

The second cause is reinfection from contact that was not treated at the same time. This is especially common in families, dormitories, children's groups, care facilities, and situations where asymptomatic carriers are present in the early stages. The World Health Organization emphasizes that due to the asymptomatic period, transmission is possible before the onset of itching. [61]

The third reason is misdiagnosis. Atopic dermatitis, contact allergies, urticaria, insect bites, folliculitis, fungal infections, and drug rashes can mimic scabies. If there is no improvement after two properly administered courses, especially without any contact rash, a diagnosis should be sought rather than endlessly repeating anti-scabies medications. [62]

The real problem of tick desensitization is increasingly being discussed, but it's difficult to prove. A 2024 systematic review and meta-analysis found that treatment failure rates increased over time, but the authors emphasize that none of the included studies fully assessed tick resilience, so the reasons for failure often remain unclear. [63]

If treatment is unsuccessful, the rational algorithm is as follows: confirm the diagnosis, check the application pattern, determine whether all contacts have been treated, evaluate the treatment of items, rule out crusted scabies and bacterial complications, and then decide on repeat or combination therapy. If repeated failures occur, it is best to consult a dermatologist, as mechanically increasing the frequency of application can lead to dermatitis and increased itching. [64]

Reason for failure	How to recognize	Solution
The cream is not applied completely.	Itching remains in typical areas, but the hands or feet are missed.	Repeat with correct technique
Contacts were not treated	New cases in the family	Synchronous therapy of all contacts
There was no reprocessing	Improvement is brief, then returns	Repeat according to the doctor's plan
Misdiagnosis	No contacts, atypical rash	Dermatological diagnostics
Crusted scabies	Crusts, scales, mild itching, high risk of infection	Combination therapy under the supervision of a physician

Therapy failure must be analyzed as a system, not just as a “weak drug.” [65]

Treatment safety and what not to do

Anti-scabies medications should not be applied more frequently, for longer, or to larger areas than recommended by your doctor or the instructions. Excessive application can cause irritation, contact dermatitis, dryness, burning, and increased itching, leading to the patient mistakenly believing that scabies has worsened. This is especially important for children, pregnant women, and people with damaged skin. [66]

Veterinary medications, concentrated insecticides, kerosene, gasoline, vinegar compresses, harsh essential oils, and other home remedies should not be used. They can cause chemical burns, poisoning, allergic dermatitis, and infectious complications. Modern guidelines list medicinal options with known regimens and limitations, rather than toxic household remedies. [67]

Lindane, although historically used against scabies, is not considered a first-line treatment due to the risk of nervous system toxicity when used incorrectly, over-applied, or accidentally ingested. The U.S. Centers for Disease Control and Prevention (CDC) advises that its use should be limited to situations where less risky medications are ineffective or intolerable.[68]

Ivermectin should not be taken "by eye" or calculated approximately. The dose is based on body weight, and the regimen often requires two doses, as a single dose is associated with a higher failure rate. Furthermore, pregnancy, body weight less than 15 kilograms, potential drug interactions, and liver function must be taken into account. [69] [70]

Antihistamines, moisturizers, and topical anti-inflammatory medications may relieve itching, but they do not kill the scabies mite. Therefore, they should not be used in place of permethrin, ivermectin, or other anti-scabies medications. Symptomatic treatment is only useful as an adjunct to comprehensive anti-mite therapy. [71]

What not to do	Why is this dangerous?
Apply only to itchy areas	Ticks may be in other areas
Apply the drug every day without a prescription	Risk of irritation and dermatitis
Treat only one person in the family	High risk of re-infection
Use household insecticides	Risk of burns and toxic effects
Taking ivermectin on your own	It is necessary to calculate the dose and take into account contraindications

Safe treatment of scabies is not a matter of "more is better" but of following the regimen precisely and controlling sources of re-infestation.[72]

FAQ

Is it possible to cure scabies in just one day?
A significant portion of the mites can be destroyed after the first proper treatment, but a complete regimen often includes a repeat treatment after 7-14 days, as mite eggs can survive the first treatment. Therefore, treatment formally begins in one evening, but monitoring takes several weeks. [73]

Why didn't the itching subside immediately after using permethrin?
Itching is associated not only with live mites, but also with an immune response to their proteins, feces, and skin damage. After successful treatment, itching can persist for up to 4 weeks and does not always mean the mites are alive. [74]

Should all family members be treated if only one person is itchy?
Yes, if scabies is suspected or confirmed, close contacts are usually treated simultaneously, even if they are asymptomatic. This is due to the long latent period when the person is already infected but not yet itchy. [75]

Which is better: permethrin or ivermectin?
For classic scabies, both options can be effective, but permethrin is often the first line of treatment, especially if it can be applied correctly. Ivermectin is useful when topical treatment is not possible, during outbreaks, mass therapy, and some complex cases, but requires dose calculation and consideration of limitations. [76] [77]

Can pregnant women treat scabies?
Yes, it should be treated, but the medication should be selected by a doctor. Topical treatments, especially permethrin, are often preferred, as safety data on ivermectin during pregnancy is limited. [78]

Should all clothing be boiled?
It's not necessary to boil everything, but items that have come into contact with the skin should be washed with hot water and dried on a hot setting, or sealed in a plastic bag for at least 1 week if washing is not possible. [79]

Should I treat my cat or dog?
No, the human scabies mite does not live on pets as a permanent parasite, so pets do not require treatment for human scabies. [80]

When can I return to work or school?
Many guidelines recommend 24 hours after the first dose of the chosen treatment, as long as the person can avoid close skin contact and follows preventive measures. In care settings, guidelines may be stricter and depend on the type of scabies. [81]

What should you do if pustules appear after treatment?
You should see a doctor, as scratching due to scabies can be complicated by a bacterial skin infection. Antiseptics or antibiotics are sometimes required, especially in cases of impetigo, abscesses, fever, or worsening general condition. [82]

When to suspect crusted scabies?
Crusted scabies is suspected in the presence of thick crusts, scales, lesions on the hands, feet, and nails, mild itching with a severe rash, immunodeficiency, advanced age, or an outbreak in an institution. This condition requires medical supervision and often combination therapy. [83]

Key points from experts

Dr. Daniel Engelman, a pediatrician, is a research fellow at the Murdoch Children's Research Institute, chairman of the International Alliance for the Control of Scabies, and a member of the World Health Organization's Diagnostic Technical Advisory Group on Neglected Tropical Diseases. The key practical message from his group's work and focus is that scabies should not be considered merely as an individual pruritic dermatosis; in families, institutions, and endemic areas, it is a public health problem where diagnosis, synchronous treatment of contacts, and control of retransmission are essential. [84] [85]

Dr Claire Fuller, consultant dermatologist at Chelsea and Westminster Hospital, is chair of the International Foundation for Dermatology. Her areas of expertise include infectious skin diseases, medical dermatology, and the management of neglected tropical skin diseases. In practice, this means that scabies treatment must include not only the drug but also clear instructions for the patient, as application errors are often perceived as "medication failure." [86] [87]

Professor Olivier Chosidow, dermatologist, Hôpital Henri-Mondor, Assistance Publique-Hôpitaux de Paris, Université Paris-Est Créteil. His group participated in a large study comparing ivermectin and permethrin, in which permethrin 5% showed superiority over oral ivermectin in clinical cure at 28 days; the practical conclusion is that oral treatment is convenient, but should not automatically displace properly performed topical therapy. [88]

The Cochrane review authors are Stephanie Rosumeck, Alexander Nast, and Corinna Dressler. Their review emphasizes that permethrin and ivermectin have similar efficacy in most comparisons, but the evidence base is heterogeneous and the quality of many studies is limited; therefore, clinical decisions should consider not only cure rates but also compliance, safety, and the risk of reinfection. [89]

The authors of a 2024 systematic review of scabies treatment failures concluded that their main conclusion for practice was that two doses of ivermectin resulted in a lower failure rate than one dose, and that the increase in treatment failure over time required careful analysis of the causes, ranging from application errors to possible decreased mite susceptibility. [90]

Result

Scabies treatment is considered successful when the medication is applied correctly, repeat treatments are performed promptly, all close contacts are treated simultaneously, and linens and clothing are treated on the same day as the treatment begins. If even one contact is left untreated or the second treatment is missed, the disease may recur even with a good medication. [91]

Permethrin 5% remains the key topical agent, ivermectin is an important systemic alternative or part of a combination regimen in complex cases, and benzyl benzoate, sulfur preparations, and other agents are used based on age, pregnancy, availability, and tolerability. For crusted scabies, outbreaks, pregnancy, infancy, and repeated failures, treatment should be under the supervision of a physician. [92] [93]

Itching after treatment does not indicate treatment failure: it may persist for several weeks and gradually subside. However, the appearance of new burrows, fresh rashes, pustules, new cases in the family, or thick crusts is a reason for a repeat medical evaluation, rather than uncontrolled repeated application of medications. [94]