Facial melanosis in woman
Introduction
Brief introduction of women's facial blackening The woman's facial blackening disease, also known as Pigmented Cosmetic Dermatitis, occurs in Japan and is named as pigmented cosmetic dermatitis by Japanese scholar Nakayama. In recent years, the use of cosmetics by women in China has increased year by year, and the incidence of cosmetic dermatitis has also increased. The clinical features are the female ankle, the diffuse or plaque pale brown of the ankle, cheek, and forehead, the pigmentation of taupe to purple-brown, and the severe spread to the entire face with itching. basic knowledge Sickness ratio: 0.001%-0.002% Susceptible people: women Mode of infection: non-infectious Complications: skin allergies
Cause
The cause of facial blackening disease in women
There is a long history of using crude cosmetics, and it has been found that certain fragrances, preservatives and surfactants in cosmetics can cause photo-sensitive dermatitis, leading to pigmentation of skin melanin metabolism, and process operations in the manufacturing process of cosmetics. The difference is closely related to the occurrence of cosmetic dermatitis. Ultraviolet radiation, wind blowing, dry air and moisture can be the cause of the disease.
Prevention
Women's face blackening prevention
Try to remove residual cosmetics, use plenty of water or saline to wash thoroughly, replace contaminated clothing, avoid scratching and hot water washing, and do not use drugs that may cause irritation, so as not to aggravate the condition.
Complication
Women's facial blackening complications Complications skin allergies
The prognosis of this disease is good, and if it is not treated in time, serious allergic reactions may occur.
Symptom
Symptoms of facial obsessive-complexity symptoms Common symptoms gingival pigmentation allergic dermatitis skin itching pigment abnormal maculopapular rash
The part of the pigmentation that mainly affects the facial makeup begins to spread to the forehead, cheeks, ears and ears behind the ankles, and the few sides can involve the neck, upper chest and arms, and the face. The central part is less, the mouth is open, the ankle and mucous membrane are not tired.
Pigmentation border clear, pale brown, taupe, heavy reddish brown or purple brown, early skin itching, burning sensation or ant walking feeling, after a period of time dermatitis, skin burning, skin erythema, swelling, erythema On the basis of the hidden small papules, but after stopping makeup, dermatitis can disappear without leaving traces, or there is sputum-like desquamation, severe erythema on the face or other cosmetic parts, maculopapular rash, papules, erythema area rapidly expanding, Involving the entire cosmetic area, small blisters, partial skin erosion and serous exudation, and pain may occur.
After the above-mentioned dermatitis gradually subsided, pigmentation appeared, and reticular pigment spots appeared around the pores, and then merged into pieces, which were light brown, taupe or purple-brown, showing a consistent appearance, and increased after sun exposure, reaching a certain degree and tending to be stable. The facial cover has fine powdery scales with telangiectasia and keratosis of the hair follicles. After several years, part of the skin can develop into a constricted atrophy of the skin consistent with the pigmentation site.
Examine
Examination of women's facial blackening
There is no special examination for this disease.
Diagnosis
Diagnosis and differentiation of facial blackening disease in women
diagnosis
According to the history of makeup and clinical manifestations, it is helpful for diagnosis. Laboratory tests for immunoglobulin E are low, and patch test and facial patch test are helpful for diagnosis, but also an important means of treatment.
There is a long history of using crude cosmetics, and it has been found that certain fragrances, preservatives and surfactants in cosmetics can cause photo-sensitive dermatitis, leading to pigmentation of skin melanin metabolism, and process operations in the manufacturing process of cosmetics. The difference is closely related to the occurrence of cosmetic dermatitis. Ultraviolet radiation, wind blowing, dry air and moisture can be the cause of the disease.
Differential diagnosis
Should be identified with the following diseases:
(1) The surface of the chloasma is a butterfly-type pale yellow-brown spot, which often has a spectacle-like contour. The pigmentation of the chloasma is increased after exposure to the sun, and the pigmentation of the eye is obvious.
(2) Riehl's black disease has deep pigmentation on the edge of the face, shallow or unaffected in the central part. In a few cases, the umbilicus and other areas are also pigmented and have no makeup history, and the pigmentation of the disease is around the eyes, nose, cheeks, The forehead is obvious and there is a history of make-up.
(3) Civatte acne heterochromia is an unexplained disease with a brown or reddish-brown phlegm pigmentation on the face and neck. The skin is a bit atrophy or small white spots. It is not easy to distinguish from cosmetic dermatitis, but it has a history of makeup. The characteristics of cosmetic dermatitis pigmentation, dermatitis, itching are distinguishable, and more importantly, the reference patch test of cosmetic materials can help diagnose.
