Chronic eczema: often due to acute, subacute eczema repeated episodes do not heal two turned into chronic eczema; can also start not obvious, due to frequent scratching, friction or other stimulation, so that the onset of the beginning of the chronic eczema. The skin of the affected area is infiltrated and thickened, the surface is rough, dark red or with pigmentation, the lesions are mostly limited plaques, commonly on the hands and feet, calves, elbow sockets, breasts, vulva, anus, etc., with clear edges. The course of the disease is chronic and can last for months or years, or can be acute due to irritation. The diagnosis of chronic eczema is mainly based on the medical history and clinical features, the diagnosis is easier. Acute eczema rash is polymorphic, symmetrically distributed, and tends to exude; chronic type lesions are mossy; subacute damage is between the two. Itching is intense; recurrence is easy. The diagnosis of specific types of eczema should be noted for their unique clinical symptoms and is not difficult. Chronic eczema needs to be differentiated from neurodermatitis, which is characterized by pruritus followed by a rash. The lesions are dry, generally non-exudative, and non-pigmented. The lesions are dry, generally non-exudative and non-pigmented. They are more likely to occur on the neck, sacral region and extensor surfaces of the limbs. It can tolerate a variety of medications and physical and chemical stimuli. The best way to treat eczema general eczema treatment: there is no special treatment for eczema in Western medicine, and more symptomatic treatment is used. The actual fact is that you can find a lot of people who have been in the business for a long time. The topical form of medication is based on the performance of clinical lesions, such as obvious redness, exudation should be selected solution cold wet compress, erythema, papules available lotion, emulsion, mud cream, oil, etc.; blisters, vesicles need to use oil; performance of scales, crusts with ointment; if moss-like changes more choice of mud cream, ointment, emulsion, coating agent, tincture and hard cream. The most prominent 6 symptoms and characteristics of eczema 1, itchiness: it is characterized by persistent itching, relying on distractions can not be resolved, when quiet, itching will intensify, forming a state of secondary intensification, persistent itching. 2, polymorphic: eczema exhibits a rash that is polymorphic and can be divided into primary and secondary rashes. The primary rash has papules, blisters, etc., and the rash has vesicles, exudate, etc. Patients usually have both primary and secondary rashes. 3, the migratory: eczema easily recurring, from one part to another, and the symptoms are not easy to eliminate. If eczema is not treated properly in the acute, it can become chronic. 4, exudative: eczema, as the name implies, will have exudate, otherwise, it is not easy to diagnose as eczema without running water. In addition, when eczema is in the chronic phase, the rash site may behave more dry, but in the course of an acute attack, there will still be exudate. 5, generalized: eczema can occur in any part of the body. 6, the chronic course: sometimes light and sometimes heavy, often repeatedly acute or subacute attacks, especially when nervousness. Often due to acute and subchronic eczema improperly handled, long-term or repeated episodes of transformation. It is mostly confined to a certain area, such as the hands, calves, elbow pits, scrotum, female genitalia, etc. The boundaries are obvious and the inflammation is not visible. The clinical manifestations of eczema Clinical manifestations of eczema can be divided into acute, subacute and chronic phases according to the urgency of the onset of eczema. 1, acute eczema acute attacks, initially confined to a certain area, soon developed symmetry, and in severe cases can be extended throughout the body. The damage is polymorphic consisting of erythema, papules and blisters, often fused into patches, the boundaries are not clear. As a result of scratching, changes such as vesicles, oozing, pus, and crusting can be seen, but exudation is obvious. The itching is conscious, especially at night, the duration of the disease is generally l-2 weeks, easy to recur, tend to be chronic. 2, subacute eczema in acute episodes, redness, exudation reduced, there are a small number of small papules, papules undulating, accompanied by vesicles, crusts and scales duration of the disease can be up to several weeks. 3, chronic eczema from the development of acute eczema, or the beginning that is chronic eczema. The edge of the damage is clearer, there is significant infiltration and hypertrophy. Any part can occur, often in some parts, such as the face, behind the ears, scrotum, calves, etc., more symmetrical onset. Eczema classification 1, according to the course of the disease is divided into acute, subacute and chronic three. (1) acute eczema: acute onset, often symmetrical distribution, to the head, face, limbs and vulva. In the course of the disease, erythema, papules, blisters, pustules, vesicles, crusts and other types of rashes can appear in sequence, but often 2-3 kinds of rashes coexist or at a certain stage to a certain type of rash. Often scratching frequently due to intense itching makes the condition worse. (2) Subacute eczema: After the acute eczema inflammation and symptoms are reduced, the rash is dominated by papules, scales and crusts, but vesicles still appear after scratching. (3) Chronic eczema: mostly due to the evolution of acute, subacute eczema repeated episodes, can also begin to present chronic inflammation. The affected area of the skin infiltration thickened, becoming dark red and pigmentation. When it does not heal, the lesions become coarse, dry and prone to cracking. It is common in the lower legs, hands, feet, elbow sockets, vulva, anus and other places. 2, eczema according to the site can be divided into the following categories: (1) breast eczema: mostly seen in breastfeeding women, areola moist, vesicles, crust, a little time can be thickened, chapped, painful when breastfeeding. Long-term non-healing. Those who have hard nodes under the skin should consider the possibility of complicating eczema-like cancer. Therefore, breast eczema should be vigilant and promptly examined. (2) Scrotal eczema: in acute cases, there is swelling, running water and crusting. In chronic cases, it is thickened, mossy, very itchy and prone to recurrence. It is often related to local sweating, vulvar irritation, neuroendocrine disorders, chronic prostatitis, etc. (3) Female eczema: Most of the skin on the labia majora and minora and nearby is red, swollen, eroded and chronically thickened, and itchy. Often associated with mycosis fungoides, leucorrhoea and endocrine disorders. (4) Anal eczema: the acute phase of perianal eczema is red, swollen and vesicular, and the chronic phase is infiltrated, thickened and even cracked. Itchy and painful, especially after the stool more obvious. Due to frequent scratching, the skin can become thick or thin, shriveled and shiny. Children’s anal eczema is mostly related to pinworms, adults are mostly related to hemorrhoids, sweating. (5) hand eczema: occurs in the palm of the hand easy to infiltrate thickening, hyperkeratosis forming chaps. Finger end eczema often repeated blistering, crusting, thickening, flaking, involving the nail bed can affect nail development, resulting in rough nail plate, sunken uneven. Contact with water, soap, laundry detergent, etc. often make eczema aggravated. (6) Calf eczema: prevalent in front of the shin and ankle, often caused by varicose veins or trauma to the lower extremities. Nodules, thickening, mossy, can also be erosion, water, easy to secondary infection or ulcer formation, stubborn and difficult to treat. (7) Eczema of the ear: more common. The lesions are found in the upper part of the earwax, the fold behind the ear, and the external auditory canal. They appear as erythema, oozing, crusting and intense itching, often caused by otitis media or ear digging. (8) Coin-shaped eczema: Mostly occurs on the extensor side of the extremities, such as the back of the hand, the back of the fingers, and the forearm. The lesions are well-defined round erythematous spots, usually 1 to 3 cm in size, with papules, blisters, exudation, and conscious itching. It has a chronic course and tends to recur in the same area.