Black papular skin disease

Introduction to black papular skin disease Black papular skin disease (dermatosispapulosanigra) was first reported by Castellai in 1925. It was mostly caused by black people. The skin lesions were tiny, round, skin-colored or darkened. The skin lesions resembled seborrheic keratosis and flat. wart. basic knowledge The proportion of illness: the incidence rate is about 0.003%-0.009% Susceptible people: more black people Mode of infection: non-infectious Complications: papular urticaria

Black papular skin disease

Cause:

The cause of the disease is unknown, and may have certain correlation with environmental factors, genetic factors, dietary factors and nutrition.

Pathogenesis

The pathogenesis is also unclear. Its pathological features are the same as those of seborrheic keratosis. Mild keratosis and parakeratosis can be seen, the acanthosis is thick, the pigmentation of the basal layer is deepened, and epidermal reticular hyperplasia and pseudocyst cystic changes can be seen.

Black papular skin disease prevention

1. It is not advisable to scratch and use irritating drugs for external use. Do not overheat with hot water to avoid spicy and irritating diet.

2, do not drink alcohol to avoid excessive sun exposure, do not smoke, avoid the use of cancer-causing chemicals. Regularly check the body, early detection, early treatment.

3, daily life should pay attention to nutritional rationality, food as much as possible to diversify, eat high protein, multi-vitamins, low animal fat, digestible food and fresh fruits, vegetables, do not eat stale or irritating things, less Eat smoked, roasted, marinated, fried, salty foods, staple foods and coarse grains to ensure nutritional balance.

Black papular skin disease complications Complications, papular urticaria

The area of skin lesions gradually increased, and the pimples.

Black papular skin disease symptoms common symptoms papules itching scales crusted ulcer appearance worm-like pregnancy pruritus

Initially small, round, skin color or darkening of the papules, single or a few occur in the jaw or cheek, the skin lesions gradually increase, up to hundreds in a few years, in addition to the circumference of the sputum is still distributed in the face, neck In the upper part and the upper part of the chest, the size of the skin lesion resembles seborrheic keratosis and flat wart, no scaling, scarring and ulceration, and no itching or other subjective symptoms.

Black papular skin disease check

Histopathology: Histopathology is basically the same as seborrheic keratosis. Mild hyperkeratosis and parakeratosis can be seen. The acanthosis is thick and the basal layer pigmentation is deepened. Some specimens can be seen with epidermal reticular hyperplasia and pseudocyst.

Diagnosis and diagnosis of black papular skin disease

According to the clinical manifestations, the characteristics of skin lesions, histopathology can be diagnosed.

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