Chronic eczema is the result of acute eczema and subacute eczema, or it may be chronic from the start due to mild, persistent irritation. Chronic eczema is often characterized by rough, thickened, mossy skin with significant itching. It occurs on the hands, feet, calves, elbows, femurs, breasts, vulva, anus and other places, mostly symmetrical. The manifestation of the affected area of the skin infiltration of dark red spots with papules, scratches and scales, local skin hypertrophy, surface roughness, with varying degrees of moss-like changes, hyperpigmentation or hypopigmentation. Self-awareness has obvious itching, often paroxysmal. The condition may be mild or severe, lasting for several months or longer. In a few cases, excessive scratching or rubbing may cause localized hyperpigmentation or hypopigmentation. When the above symptoms of chronic eczema, should go to the hospital in time for relevant examination, under the guidance of professional doctors for targeted treatment.