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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