The common causes of dense small rashes on the face include follicular keratosis pilaris, milia, contact dermatitis and so on.
1. Follicular keratosis pilaris: this disease is an autosomal dominant disease, mainly related to genetic factors, but dry environment, tar and other substances stimulation, sun exposure, too much mental stress and other factors, easy to induce this disease. It is characterized by follicular hard papules, covered with scabs at the top, and other symptoms.
2. Corns: generally the cause of primary corns is unknown, may be related to heredity, while secondary corns are mostly related to skin trauma, cosmetic treatment, blistering skin disease and other factors. The manifestation of yellowish-white, firm papules, smooth surface, not fusion, extrusion can be discharged tofu dregs-like particles and other symptoms.
3. Contact dermatitis: this disease is due to skin contact with exogenous pathogenic substances, such as detergents, soaps, alcohol, drugs, etc., stimulate the skin or trigger an allergic reaction. Manifested as erythema, papules, papules, itching, burning sensation and other symptoms on the skin.
It is recommended that patients according to their own situation, if necessary, to the regular hospital to identify the cause, symptomatic treatment.