Shingles: causes, symptoms, diagnosis, treatment

Causes and pathogenesis of lichen planus

The cause of lichen awl-shaped is not fully established. It is believed that it occurs due to a deficiency of vitamin A. Awl-shaped horny papules can be observed in many infectious and non-infectious dermatoses.

Symptoms of lichen planus

Dermatosis mainly affects children, more often boys. The favorite localization of the rash is the back of the neck, abdomen, buttocks, thighs, less often other areas of the skin. The rash is usually multiple, does not merge, when they are closely located, plaques are formed. The presence of small follicular papular elements is characteristic, which are located on a slightly reddened base. When running the palm over the surface of the lesions, it will create the impression of touching a grater. Another characteristic sign is the presence of a filiform spine on the surface of the nodules. Subjectively, some patients may experience mild itching of the skin. The course can be long.

Histopathology. Histologically, moderate hyperkeratosis with the presence of horny plugs in the mouths of dilated follicles and mild lymphocytic infiltration in the dermis around the hair follicles are detected.

Differential diagnosis. The disease must be distinguished from lichenoid tuberculosis, follicular mucinosis, pityriasis versicolor, and pityriasis versicolor.

Treatment of lichen planus.

Prescribe long-term intake of vitamin A (100-200 IU 2-3 times a day) and other vitamins (C, D, group B). Externally apply 1-2% salicylic ointment, corticosteroids and ointments containing retinoic acid.

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