A red circle around the chin may be caused by bad habits, physiological reasons, or contact dermatitis, seborrheic dermatitis and other pathological reasons. 1. Physiological reasons: if the environment is dry, skin over-cleaning, moisturizing care is not in place, resulting in skin barrier damage, can cause a red circle around the chin, accompanied by dryness, tightness and other discomforts. 2. Contact dermatitis: contact dermatitis is due to contact with some kind of irritating substances or allergic substances, the skin produces inflammation caused by the symptoms of a red circle around the chin. 3. Seborrheic dermatitis: it is easy to occur in the seborrheic area, the chin belongs to the seborrheic area, the local redness, peeling, greasy scales or scabs and other symptoms. If the red circle around the chin is slow to get better, it is recommended to consult a doctor in time to find out the specific cause of the disease and then targeted treatment.