A lot of flakes in the auricle may be caused by psoriasis, seborrheic dermatitis, external ear eczema and other factors. 1. Psoriasis: the cause of psoriasis is mostly related to genetic, environmental and immune factors. If psoriasis occurs in the auricle area, there will be red inflamed rash or erythema, and it is usually covered with loose silvery-white scales. 2. Seborrheic dermatitis: it is usually caused by excessive secretion of oil in the skin, and may be related to heredity, environment and other factors. If seborrheic dermatitis occurs in the ear area, itching, erythema, and flaking skin will appear on the affected area. 3. Eczema of the outer ear: generally occurs in the external auditory canal, the auricle and the skin around the ear, the affected area of the skin will appear itching, redness and swelling, accompanied by yellow watery secretion exudation, after coagulation, can form a crust, flaking. In addition, skin allergies in the auricle may also lead to a lot of dandruff in the auricle, it is recommended that the patient go to the hospital in a timely manner for the appropriate examination, to clarify the cause of the disease, and then further treatment.