Pigmented perioral erythema
Introduction
Introduction to pigmented oral erythema Erythrocyte erythema (erythroseperibuccalepigmentaire) is also called erythrosis pigmentation (erythrosispigmentaciei), Brocq pigmented erythema erythema (erythrosisperibuccalepigmentarieofBrocq). The clinical manifestation is the appearance of erythema and pigmentation in the middle of the face. basic knowledge The proportion of illness: rare incidence, the incidence rate of family history is about 5%, no family history is about 0.03% - 0.06% Susceptible people: no special people Mode of infection: non-infectious Complications: typhus
Cause
Pigmented perioral erythema
(1) Causes of the disease
The cause is still unknown, and may be related to the photosensitivity contained in cosmetics. It is also thought to be related to dysfunction of vasomotor nerves, abnormal metabolism of serotonin and seborrheic dermatitis, and patients are mostly seborrheic.
(two) pathogenesis
The pathogenesis is still unclear.
Prevention
Pigmented perioral erythema prevention
Remove the cause and avoid irritating diets such as alcohol and coffee.
Complication
Pigmented erythema erythema Complications typhus
Pigmented skin lesions, macules.
Symptom
Pigmented erythema erythema symptoms common symptoms pigment spots
The disease is more common in middle-aged women. It can also be seen in men. It is diffuse erythema around the mouth. It can change into brown or brownish red spots for a long time. It has a narrow normal skin band between the lips and can spread to the forehead. In the forehead and lower jaw, individual patients are limited to the mouth and mandibular angle. After the inflammation subsides, the pigmentation usually lasts for a long time. After the cause is removed, it can gradually disappear, which may be accompanied by Civatte skin heterochromia.
Examine
Examination of pigmented oral erythema
Histopathology: epithelial melanosomes and melanocytes increased, dermal papillary vasodilatation, inflammatory cell infiltration.
Diagnosis
Diagnosis and differentiation of pigmented erythema
According to the clinical manifestations, the characteristics of skin lesions and histopathological features can be diagnosed.
Should be differentiated from perioral dermatitis.
