Eruptive vellus hair cyst
Introduction
Introduction to rash hairy cyst Eruptive Vellushaircysts (Euplyvellushaircysts) was first reported by Esterly et al. in 1977. It is markedly hereditary, and, like the epidermal cyst, occurs in the funnel of the hair follicle. The most characteristic manifestation is that multiple hairs can be seen on the lateral surface of the hair follicle, and surgical resection is performed. basic knowledge The proportion of illness: 0.002% Susceptible people: common in children and the elderly Mode of infection: non-infectious Complications: congenital thick nail disease
Cause
Epileptic blepharocytosis
(1) Causes of the disease
The cause is unknown, and may have certain correlation with environmental factors, genetic factors, dietary factors, and maternal mood and nutrition during pregnancy.
(two) pathogenesis
Constant staining dominant inheritance is the main pathogenesis of this disease. Pathological features: a cyst is located in the upper part of the dermis, b wall is a stratified squamous epithelium, c capsule has a ring-shaped horny matter and a number of different bristles.
Prevention
Eczema hair follicle prevention
Therefore, this disease cannot be directly prevented. Early detection, early diagnosis, and early treatment are important for preventing this disease, which can reduce the incidence of this disease and reduce its severity.
Complication
Eruptive sacral cyst complications Complications congenital thick nails
Multiple fatty sac tumors, hair follicles, multiple angle stalks, congenital thick nails.
Symptom
Rash-like sacral cyst symptoms common symptoms crusting cyst pimples
It is light yellow to reddish-brown small papules with a diameter of 1 to 2 mm. Some papules are scarred or umbilical, which occurs in the chest. Some of them occur in the limbs and trunk. Skin lesions can also be limited to the face or spread. Sexuality, common in children and the elderly, generally no symptoms, skin lesions can be resolved after a few years, the disease can be associated with other skin damage, such as multiple lipid sac tumors, hair follicles, multiple angles of suppository, congenital thick A disease and so on.
Examine
Examination of eruptive sacral cyst
Histopathology: The cyst is located in the upper part of the dermis, the cyst wall is thin, lining the stratified squamous epidermis, the granular layer is thinned, and the cyst wall may contain the final hair follicle structure. The most characteristic manifestation is multiple lesions on the lateral surface of the hair follicle. hair.
Diagnosis
Diagnosis and identification of eruptive sacral cyst
Identification
According to clinical manifestations and lesion characteristics, histopathology can be diagnosed. In the trunk, especially in the chest, small papules with umbilical concavities should be considered, but a biopsy is needed to confirm the diagnosis.
Identification
Need to be identified with multiple lipid sac tumors, millet rash, epidermoid cysts, penetrating papular dermatoses.
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