^

Health

A
A
A

Chronic cerebral ischemia

 
, medical expert
Last reviewed: 07.06.2024
 
Fact-checked
х

All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.

We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.

If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.

Chronic cerebral ischemia (CCHI) is a long-term condition in which the brain periodically or permanently fails to receive enough oxygen and nutrients due to chronic inadequate blood supply. This condition may develop as we age or may result from long-term changes in the blood vessels of the brain. CIBM can be associated with a variety of factors, such as atherosclerosis (buildup of cholesterol and other substances in the arteries leading to the brain), hypertension (high blood pressure), diabetes mellitus, and other medical conditions.

HIMM can manifest with a variety of symptoms, including:

  1. Headaches, often caused by inadequate blood supply to the brain.
  2. Memory loss and cognitive impairment such as difficulty concentrating and understanding.
  3. Problems with movement coordination and balance.
  4. Dizziness and a feeling of unsteadiness.
  5. Deterioration in the ability to analyze and process information.
  6. Emotional changes such as irritability or depression.

It is important to see your doctor if you suspect chronic cerebral ischemia, or if you experience similar symptoms, to get a diagnosis and treatment. Managing risk factors such as a healthy diet, physical activity, blood pressure control and medication can help improve the condition and prevent further deterioration.

Causes of the chronic cerebral ischemia

Chronic cerebral ischemia is usually associated with impaired blood supply to the brain as a result of long-term hypoxia (lack of oxygen) or ischemia (lack of blood supply). Causes of CCHM may include the following factors:

  1. Atherosclerosis: This is the most common cause of HIM. Atherosclerosis is the formation of atherosclerotic plaques inside the blood vessels that narrow the vessels and reduce blood flow to the brain.
  2. Hypertension (high blood pressure): High blood pressure can damage the walls of blood vessels in the brain, causing them to thicken and narrow, and therefore impairing blood supply.
  3. Diabetes: Patients with diabetes have an increased risk of atherosclerosis and microvascular changes, which can impair blood flow to the brain.
  4. Hyperlipidemia (high cholesterol): Elevated blood cholesterol can contribute to the formation of atherosclerotic plaques in blood vessels.
  5. Smoking: Smoking is a risk factor for atherosclerosis and therefore may contribute to the development of HIMM.
  6. Heredity: Genetic factors can increase susceptibility to atherosclerosis and vascular disease.
  7. Aging: The risk of developing HIMM increases with age because atherosclerosis and other vascular changes can increase over the years.
  8. Atrial fibrillation (atrial fibrillation multiforme): This is an irregular heart rhythmic movement that can cause blood clots to form and break, which can cause a stroke.
  9. Other cardiovascular disease: Heart disease such as angina pectoris, myocardial infarction or mitral stenosis may impair blood supply to the brain.
  10. Head and Neck Vascular Disease: Stenosis (narrowing) or thrombosis (blockage) of the blood vessels going to the head and neck can restrict blood flow to the brain.
  11. Obesity: Obesity may be associated with atherosclerosis and hypertension, which increases the risk of HIMM.
  12. Stress and depression: Increased stress and depression can increase the risk of cardiovascular disease, including HIMD.
  13. Alcohol and drug abuse: Alcohol or drug abuse can increase the risk of atherosclerosis and other risk factors for HIMM.

Symptoms of the chronic cerebral ischemia

Chronic cerebral ischemia can present with a variety of symptoms that can vary depending on the extent and location of vascular changes in the brain. The following are common symptoms that may be associated with CIBM:

  1. Headaches: Headaches can occur due to inadequate blood supply to the brain.
  2. Memory loss: Patients with HIMH may have difficulty with short- and long-term memory.
  3. Difficulties with concentration and mental function: This may include impairment of cognitive abilities, such as the ability to make decisions and process information.
  4. Dizziness and unsteadiness: HIMM can cause problems with movement coordination and balance.
  5. Speech problems: Patients may have difficulty speaking or understanding speech.
  6. Decreased intellectual ability: There may be changes in the level of intellectual and problem-solving ability.
  7. Emotional changes: Irritability, apathy, and depression may be associated with HIMM.
  8. Symptoms of cerebral ischemic attacks (TIAs): Temporary brain dysfunction, such as weakness in one half of the body, loss of vision, or speech difficulties, may occur before a CIA.
  9. Motor problems: In some cases, HIMM can lead to motor problems such as weakness in the limbs.

Symptoms of HIMM can be gradual and may worsen over time. It is important to see your doctor if you suspect you have HIMM or if you notice similar symptoms in yourself to get the medical evaluation, diagnosis and treatment you need. Early detection and management of HIMH can help prevent further deterioration and improve quality of life.

Cognitive impairments

Chronic cerebral ischemia can affect cognitive function and lead to various impairments in memory, attention, concentration and other cognitive abilities. These impairments may be related to inadequate blood supply and deterioration of brain function due to vasoconstriction. Cognitive impairment can manifest itself in a variety of ways:

  1. Memory loss: Patients with HIM may experience problems with short-term or long-term memory. This can manifest as forgetfulness, difficulty recalling words or names, or forgetting important events or details.
  2. Decreased attention and concentration: Patients may have difficulty staying focused on tasks or concentrating on anything. This may affect the performance of daily activities or work.
  3. Decreased information processing speed: Patients may experience a decrease in information processing speed, making it slower for them to react mentally and complete tasks.
  4. Decreased cognitive flexibility: This means that people may find it difficult to adapt to new information or changes in the environment.
  5. Decreased decision-making and problem-solving skills: Patients may have difficulty with tasks and decisions that were previously easier for them.
  6. Loss of orientation in time and place: This can manifest itself in patients forgetting dates, days of the week, and may get lost or fail to recognize familiar places.

Treatment for cognitive impairment in HIM may include the following:

  • Treating the underlying cause: Managing blood pressure, lowering cholesterol, and treating other risk factors for vascular disease.
  • Medications: Your doctor may prescribe medications to improve cerebral circulation and cognitive function, such as cerebrolysin or memantine.
  • Rehabilitation: Rehabilitation programs can help patients improve cognitive skills, including memory and attention.
  • Psychological support: Support from a psychologist or psychiatrist can be helpful for patients suffering from cognitive impairment, especially if it causes depression or anxiety.

It is important to note that treatment of cognitive impairment in HIM should be individualized and prescribed under the supervision of a physician. Patients and their loved ones should work closely with medical professionals to effectively manage these impairments and maintain quality of life.

Chronic cerebral ischemia in the elderly

Chronic cerebral ischemia is common in older adults, as it can result from aging and long-term changes in the blood vessels of the brain. There are a number of risk factors in the elderly that may contribute to the development of CIBM. It is important to realize that aging itself may be one of these factors and that this problem inevitably occurs in all older adults.

Symptoms of CCHM in older adults may be similar to symptoms in younger patients, but they may be more severe and affect quality of life. Some of the possible symptoms include:

  1. Headaches: Headaches may become more frequent and intense.
  2. Memory loss: Older adults may experience a decline in short- and long-term memory.
  3. Cognitive impairment: Difficulties with concentration, thinking, and information processing may be more prominent.
  4. Decreased intellectual abilities: Changes in intellectual and decision-making abilities are possible.
  5. Emotional changes: Depression, irritability and apathy may increase.
  6. Motor problems: Weakness in the limbs or difficulty coordinating movements may be more visible in the elderly.

It is important to see a doctor to diagnose and treat HIM in older adults. Treatment may include lifestyle changes (e.g., healthy eating and physical activity), control of risk factors (e.g., blood pressure and diabetes mellitus), and medication. Cases of hCGM can vary, and treatment will be individualized based on the patient's specific situation and needs.

Stages

The severity of HIMM can vary from mild to severe, and the grade of severity depends on the amount of testing doctors perform to evaluate blood vessels and brain function.

The following scale is commonly used to categorize the degree of HIMM:

  1. Mild degree (Grade I): In this stage, there is slight narrowing of the blood vessels or minimal impairment of the blood supply to the brain. Patients may experience mild symptoms such as headache or fatigue.
  2. Moderate degree (grade II): The narrowing of the blood vessels is more pronounced and blood supply to the brain is impaired. This can lead to more serious symptoms such as impaired concentration, memory or motor coordination.
  3. Severe degree (III degree): In this stage, the narrowing of blood vessels becomes critical and blood supply to the brain is severely restricted. This can cause significant brain dysfunction such as severe headaches, loss of consciousness, speech impairment, paralysis and other serious symptoms.

Various diagnostic techniques such as magnetic resonance angiography (MRA), duplex vascular scanning, computed tomography (CT) scans, and others may be used to assess the extent of CIBM. Physicians may also consider the patient's clinical symptoms and medical history when determining the degree of ischemia.

Forms

Classification of chronic cerebral ischemia may be based on various criteria, including causes, extent of lesion, location, clinical symptoms, and other parameters. However, there is no unambiguous and comprehensive classification system for CIBM, and different medical organizations and researchers may use different approaches. Here are some of the possible ways to classify HIMM:

  1. For reasons:

    • Atherosclerotic cerebral ischemia: Caused by atherosclerosis of the blood vessels, which leads to the formation of plaques and nodules in the arteries.
    • Embolic cerebral ischemia: Associated with the formation of blood clots or emboli in the blood that can block the blood supply to the brain.
    • Hypotensive cerebral ischemia: Caused by reduced blood pressure, which can lead to inadequate blood supply to the brain.
  2. By degree of lesion:

    • Mild cerebral ischemia: Small ischemic attacks (TIAs) or small areas of inadequate blood supply.
    • Moderate cerebral ischemia: Moderate reduction in blood supply and more prominent clinical symptoms.
    • Severe cerebral ischemia: Extensive brain damage with severe symptoms of ischemia.
  3. By location:

    • Permanent cerebral ischemia: Brain damage occurs in specific areas of the brain and does not change over time.
    • Progressive cerebral ischemia: Areas of ischemia expand over time, causing symptoms to worsen.
  4. Based on clinical symptoms:

    • Cerebrovascular dementia: Chronic cognitive impairment that may be caused by HIMM.
    • Transient ischemic attacks (TIAs): Temporary disturbances of brain activity that may precede HIMI.

The classification of HIMM can be complex due to the variety of factors that influence this condition. It is important for a medical professional to perform a detailed examination and diagnosis to determine the specific form of HIMM and develop the most effective treatment and rehabilitation plan for the patient.

Complications and consequences

Chronic cerebral ischemia can cause a variety of complications and sequelae that can significantly affect a patient's quality of life. Complications and consequences can vary depending on the severity and duration of the disease. Here are some of the possible complications and consequences of CIBM:

  1. Ischemic Stroke: HIM can lead to the development of acute ischemic stroke, which is a serious medical condition and can cause deterioration of brain function, paralysis, and other impairments.
  2. Cognitive Deterioration: Patients with hCGM may experience deterioration in memory, concentration, and other cognitive functions, which affects the ability to perform daily tasks.
  3. Emotional and psychological problems: HIMM can cause emotional changes including depression, irritability, and apathy.
  4. Movement disorders: Patients with HIMH may have problems with movement coordination, decreased muscle strength and balance.
  5. Speech and communication problems: HIMH can affect the ability to speak and understand speech.
  6. Loss of Independence: Depending on the severity, HIM may lead to a deterioration in the patient's independence and need for ongoing assistance and care.
  7. Decreased quality of life: All of the above effects and complications can significantly reduce a patient's quality of life and limit their ability to perform routine tasks.

Diagnostics of the chronic cerebral ischemia

Diagnosis of chronic cerebral ischemia includes a number of clinical, instrumental and laboratory methods aimed at identifying symptoms, assessing the degree of vascular damage and determining risk factors. Here are the main methods of diagnosing CCHM:

  1. Clinical Examination:

    • The doctor interviews the patient, during which the anamnesis (medical history) is established and characteristic symptoms such as headache, dizziness, loss of coordination, changes in vision, memory problems, etc. Are identified.
  2. Neurological examination:

    • A neurologist may perform special tests and checks to evaluate the patient's neurologic status, including movement coordination, reflexes, and sensitivity.
  3. Instrumental methods:

    • Magnetic resonance angiography (MRA): This is an educational technique that visualizes the blood vessels of the brain and detects atherosclerosis, stenosis (narrowing of blood vessels), or thrombosis.
    • Head and Neck Duplex Scan (HNDS): HNDS is used to assess blood flow in the vessels of the brain and neck and to detect atherosclerotic plaques.
    • Computed tomography (CT) and magnetic resonance imaging (MRI): Theseimaging techniques can be used to detect changes in the brain, such as infarcts or hemorrhages.
  4. Lab tests:

    • Blood tests may include cholesterol, glucose, hemostasis and other tests to assess the presence of risk factors for atherosclerosis and thrombosis.
  5. Electroencephalography (EEG): This method evaluates the electrical activity of the brain and detects abnormalities in brain function.

  6. Functional tests: Some specific tests can be used to assess cognitive function and memory.

Differential diagnosis

The differential diagnosis of chronic cerebral ischemia involves identifying and distinguishing this condition from other possible causes of symptoms associated with cerebral dysfunction. The following are some conditions that may have similar symptoms to CCHM and the main criteria for their differential diagnosis:

  1. Alzheimer's disease and other neurodegenerative diseases:

    • Characteristic symptoms: Gradual deterioration of memory, cognitive function and behavior.
    • Differential diagnosis: Assessment of cognitive function using tests, magnetic resonance imaging (MRI) or positron emission tomography (PET).
  2. Vascular dementia:

    • Characteristic symptoms: Cognitive deficits that develop as a result of damage to the blood vessels of the brain.
    • Differential diagnosis: Investigation of cerebral vessels by MRI with angiography, assessment of risk factors for vascular disease.
  3. Systemic infections and inflammatory diseases:

    • Characteristic symptoms: Neurologic symptoms and/or fever that may result from infection or inflammation of the brain.
    • Differential diagnosis: Laboratory tests of blood and cerebrospinal fluid, MRI of the brain.
  4. Encephalopathy due to toxic exposure:

    • Characteristic symptoms: Psychomotor slowing, memory and cognitive impairment due to toxic exposure (e.g., alcohol, drugs).
    • Differential diagnosis: Assessment of substance use history, biochemical blood and urine tests, brain MRI.
  5. Schizophrenia and other mental disorders:

    • Characteristic symptoms: Pathological changes in thinking, perception and behavior.
    • Differential diagnosis: Clinical evaluation by a psychiatrist, ruling out organic causes of symptoms with appropriate investigations.
  6. Headaches and migraines:

    • Characteristic symptoms: Headache and/or migraine can sometimes be accompanied by short-term cognitive impairment, but these usually differ in the nature of the symptoms and duration.
    • Differential diagnosis: Assessment of the nature and duration of pain, symptoms accompanying migraine.

A comprehensive clinical examination of the patient, including an evaluation by a neurologist, psychiatrist, or psychologist, as well as appropriate laboratory and instrumental tests such as MRI, computed tomography (CT), electroencephalography (EEG), and others, is necessary for accurate diagnosis and differential diagnosis. The diagnosis and treatment of HIMM should be guided by an experienced medical professional.

Who to contact?

Treatment of the chronic cerebral ischemia

Treatment of chronic cerebral ischemia aims to improve blood supply to the brain and reduce the risk of stroke and other complications. Various methods and approaches are used in the treatment of CCHM, including the following:

  1. Drug therapy:

    • Antiaggregants: Drugs such as acetylsalicylic acid (aspirin) or clofibrate may be prescribed to reduce blood clots and improve blood flow.
    • Cholesterol-lowering drugs: Statins and other medications can help lower blood cholesterol levels and reduce the risk of plaque buildup in blood vessels.
    • Blood pressure medications: If you suffer from hypertension, hypertension treatment can help restore normal blood flow to the brain.
    • Medications to improve cere bralcirculation: In some cases, your doctor may prescribe medications such as cerebrolysin or pentoxifylline to improve blood flow in the brain.
  2. Lifestyle changes:

    • Controlling risk factors: Stopping smoking, reducing alcohol consumption, controlling blood sugar levels (if you have diabetes), moderate exercise and a healthy diet can help reduce the risk and progression of HIMM.
    • Diet: Following a diet low in salt and saturated fat and rich in vegetables, fruits, fish and nuts can reduce the risk of vascular atherosclerosis.
  3. Physical Rehabilitation: Exercise under the supervision of a physical therapist can help restore function and mobility in HIMM.

  4. Surgical treatment:

    • Angioplasty and stenting: In some cases, angioplasty and stenting procedures may be needed to widen narrow or blocked arteries.
  5. Medical surveillance: Patients with HIMM are recommended to have regular medical surveillance to monitor vascular status and the effectiveness of treatment.

Treatment of CIBM should be individualized and prescribed by a doctor depending on the severity of the disease, the presence of additional risk factors and medical indications. It is important to follow the doctor's recommendations and lead a healthy lifestyle to improve the cerebral blood supply and reduce the risk of complications.

Medicines

Treatment of chronic cerebral ischemia usually involves the use of various medications to improve blood supply to the brain and prevent blood clots. Treatment is usually prescribed on an individual basis depending on the degree of ischemia, comorbidities and risk factors. The following are some of the medications that may be used in the treatment of CIBM:

  1. Antiaggregants:

    • Acetylsalicylic acid (aspirin): Aspirin helps reduce the blood's ability to form blood clots and may be used to prevent stroke.
    • Clopidogrel (Plavix): This medication may also be used to prevent blood clots.
  2. Blood pressure medications:

    • Antihypertensive medications: If you have high blood pressure, your doctor may prescribe appropriate antihypertensive medications.
  3. Cholesterol-lowering drugs:

    • Statins (e.g., atorvastatin, simvastatin): Statins help lower blood cholesterol levels and may be helpful in preventing further formation of atherosclerotic plaques.
  4. Medications to improve circulation:

    • Pentoxifylline (Trental): This medication may help improve blood circulation in the blood vessels of the brain and reduce the symptoms of HIMM.
  5. Drugs to improve brain activity:

    • Cerebrolysin: This drug may be used to improve memory and cognitive function in patients with HIMM.
  6. Antioxidants:

    • Vitamin E and C: Antioxidants may help reduce tissue damage caused by free radicals.
  7. Medications to control diabetes mellitus:

    • If you have diabetes, your doctor may prescribe appropriate medications to control your blood glucose levels.
  8. Drugs to improve microcirculation:

    • Vasodilators: Some vasodilators can help dilate small blood vessels and improve microcirculation in the brain.

HIM treatment should be supervised by a doctor who will choose the most appropriate medications and dosages depending on your condition. It is important to follow your doctor's recommendations, undergo regular check-ups and monitor your health.

Therapeutic gymnastics

Therapeutic exercise can be a useful part of the rehabilitation process in chronic cerebral ischemia (CCI), especially for improving physical activity, coordination of movements and general well-being. However, it is important to consider the individual needs and physical ability of the patient when selecting exercises and exercise regimen. It is always important to consult a physician and physical rehabilitation specialist before starting therapeutic exercises.

Here are some general recommendations for therapeutic exercises for HIMM:

  1. Warm-up: Start with easy warm-up exercises such as head rotations, gentle bends and twists.
  2. Strengthening neck and shoulder muscles: Effective exercises include raising and lowering the shoulders, rotating the shoulders, and tilting the head back and forth.
  3. Balance and coordination exercises: Exercises that require balance can help improve coordination of movements. This can include standing on one leg, shifting your body weight from one leg to the other, and other similar exercises.
  4. Strengthen overall fitness: Regular aerobic exercise such as walking, biking, and swimming can help improve circulation and physical endurance.
  5. Relaxation techniques: Practicing relaxation and breathing exercises can help relieve stress and tension, which also benefits the patient.
  6. Regularity and moderation: It is important to consider the patient's physical ability and gradually increase the intensity of exercise. One should not engage in physical activity to the point of exhaustion or pain.
  7. Safety precautions: Always keep safety in mind while exercising and avoid falls or injuries.

Therapeutic exercises should be supervised by a professional, such as a physical therapist or rehabilitation therapist, to ensure that the exercises are safe and effective. An individualized approach to the patient, taking into account their medical and physical history, as well as their needs, is the key to successful HIM rehabilitation.

Clinical Guidelines

Clinical guidelines for patients with chronic cerebral ischemia may include the following:

  1. Treatment of underlying causes and risk factors:

    • Blood pressure control: Keep your blood pressure at an optimal level under your doctor's supervision.
    • Cholesterol levels: Eat a healthy diet and take cholesterol-lowering medications as needed.
    • Blood glucose levels: If you have diabetes, monitor your glucose levels and adjust treatment if necessary.
    • Healthy lifestyle: Review your lifestyle, including smoking, being overweight, and physical activity. Smoking should be stopped and physical activity increased with your doctor's approval.
  2. Medication treatment:

    • Antiaggregants: Medicines such as acetylsalicylic acid (aspirin) or clofibrate may be used to prevent blood clots.
    • Blood pressure medications: Your doctor may prescribe antihypertensive medications if you have high blood pressure.
    • Cholesterol-lowering drugs: Statins and other medications can be used to lower cholesterol.
  3. Monitoring and regular examination:

    • Regular doctor visits: Follow your doctor's recommendations and get regular checkups.
    • Instrumental studies: Patients with CIMH may require magnetic resonance angiography (MRA) or other imaging techniques to evaluate the cerebral vasculature.
  4. Healthy Lifestyle:

    • Healthy Eating: Eat a diet rich in fruits, vegetables, whole grain products and low in saturated fat.
    • Physical activity: Maintain your physical activity level as recommended by your doctor.
    • Stress Management: Learn stress management techniques such as relaxation, meditation or yoga.
  5. Symptom Management: Depending on your symptoms, your doctor may consider prescribing medications, such as those to improve cognitive function, relieve pain, or improve circulation.

Patients with CIHM should carefully follow their physician's recommendations and regularly discuss their condition with a medical professional. The treatment plan may differ for each patient depending on the degree of ischemia, the presence of additional diseases and individual characteristics.

Forecast

The prognosis for chronic cerebral ischemia depends on many factors, including the extent and severity of the disease, the availability of treatment, the patient's ability to adhere to health care recommendations, and the level of support provided by medical professionals and the surrounding community. However, the prognosis of HIMI is usually more favorable than the prognosis after an acute stroke.

The following are some factors that may affect prognosis in HIMM:

  1. Extent of damage: The prognosis depends on how extensive and severe the brain damage is. Minor and transient ischemic attacks (TIAs) may have less serious consequences than massive brain infarctions.
  2. Timely treatment: Early and effective treatment of HIMH can help prevent further deterioration and improve prognosis.
  3. Control of risk factors: Managing risk factors such as hypertension, diabetes, smoking, etc., can reduce the likelihood of further deterioration.
  4. Support and rehabilitation: Participation in rehabilitation activities such as physical therapy, speech therapy and psychological support can help recovery and improve quality of life.
  5. Patient adaptability: Patients who actively adhere to recommendations for a healthy lifestyle, proper treatment and rehabilitation often have a more favorable prognosis.
  6. Age and general health: A patient's age and health status can also affect prognosis. Older people and patients with additional medical problems may have a more difficult prognosis.

It is important to emphasize that the prognosis of HIMM can be individualized for each patient and should be discussed with a physician based on medical evidence and case characteristics. Regular medical follow-up and adherence to physician recommendations can help improve prognosis and quality of life in HIM.

Chronic cerebral ischemia and disability

Determination of disability for chronic cerebral ischemia depends on the severity of the disease and its impact on the patient's overall functionality. Disability is evaluated by physicians and medical experts based on a variety of factors, including clinical symptoms, examination findings, response to treatment, and the patient's functional capacity.

A medical and social expert assessment is usually used to determine disability, which analyzes the patient's condition and his or her ability to maintain self-care, work and communicate. Experts also consider what medical conditions prevent the performance of normal daily tasks and activities.

Disabilities can be temporary or permanent and are categorized by the degree of limitation:

  1. First disability group: This group usually includes patients with severe disabilities who are completely or almost completely unable to engage in normal life activities and work.
  2. Second disability group: Patients with moderate impairments who have limitations in performing some normal activities and work may be included in the seconddisability group.
  3. Group Three Disability: This group includes patients with mild disabilities who can perform normal activities and work, but with certain limitations or adaptations.

It is important to note that disability is always assessed on an individual basis and may change according to the improvement or deterioration of the patient's condition. Treatment and rehabilitation play an important role in improving the quality of life of patients with CCHM and reducing the degree of functional limitation. Physicians and medical and social assessment specialists work with patients to determine the best way to provide support and rehabilitation.

You are reporting a typo in the following text:
Simply click the "Send typo report" button to complete the report. You can also include a comment.