Red skin on the chin is usually considered a symptom of eczema, seborrheic dermatitis, bearded sores or contact dermatitis. You need to go to the dermatology department of the hospital in time, and use medication under the guidance of the doctor. 1. Eczema is stimulated by a variety of internal and external factors, can be manifested in the chin skin redness, pimples, accompanied by obvious itching. 2. Seborrheic dermatitis is currently unknown etiology, and poor dietary habits have a relationship, stay up late, love alcohol, and spicy stimulating foods are prone to seborrheic dermatitis. The performance of the facial skin appeared large light red spots, the surface of the greasy flaking. 3. Beard sores are caused by bacterial infection of the skin, the patients are almost all men, many are shaving after breaking the skin is caused by bacterial infection. The performance of the place where there is beard skin redness, the surface has a lot of pustules and papules. 4. contact dermatitis localized allergic reaction, in direct contact with the skin allergens or irritants appear after the skin, contact dermatitis on the chin is a lot of hair removal cream caused. The manifestation of the chin appeared clearly bordered erythema, erythema on the blisters and erythema, papules, itching obvious. There may be other causes of red skin on the chin, it is recommended to go to the hospital, to clarify the cause of the disease, symptomatic treatment.