Dry arms with flakes may be physiological factors, ringworm, ichthyosis and other causes. 1. Physiological factors: drinking too little water or cold and dry weather, etc., will lead to dry arms with flakes, usually no other clinical symptoms, is a normal physiological performance. 2. ringworm: usually associated with fungal infections, fungal products on the arm area of the skin caused by the stimulation, can make the local dry peeling phenomenon, may also be accompanied by itching, and severe secondary bacterial infections. 3. Ichthyosis: arm localization exists when ichthyosis, will also lead to dry arm flakes, showing ichthyosis, local skin will also appear thickening, cracking and other abnormalities. It is recommended that dry arms with flakes, and accompanied by other abnormal manifestations, to rule out physiological factors, should consult a doctor in a timely manner, in accordance with the doctor’s instructions for treatment.