allergic eczema
Introduction
Introduction to allergic eczema Allergic eczema (eczema) is a common inflammatory skin disease. Its clinical features are pleomorphic rashes, tend to ooze out, symmetrically distributed, consciously itchy, it is easy to repeat, and it can be unhealed for many years. The cause is more complicated. Mostly due to the interaction of some external or internal factors. The causal relationship is more complicated and there are many other influencing factors, so it is different from contact dermatitis. The reason is not easy to remove, and tends to relapse and chronic. basic knowledge The proportion of illness: 0.02% Susceptible people: people with allergies Mode of infection: non-infectious Complications: dermatitis
Cause
Causes of allergic eczema
1, external factors: such as chemical agents, cosmetics, spices, dyes, detergents, animal toxins, eggs, fish and shrimp and milk and other heterologous proteins, pollen, dust, bacterial infections, sun, cold, scratching and so on.
2, in vivo factors: allergic constitution, metabolism, endocrine or digestive tract dysfunction, neuropsychiatric dysfunction, excessive fatigue, mental stress, focal infection, intestinal parasitic disease, varicose veins, sweating, dry skin and so on.
3. Pathogenesis: Delayed allergic reaction caused by complex in vivo factors and external factors. But some eczema has nothing to do with allergies. Changes in patient reactivity often involve multiple factors, some of which are unclear and yet to be studied in the future.
Prevention
Allergic eczema prevention
1. Try to find allergens, but often have difficulties.
2, to avoid irritating substances in contact with the skin, do not wash the affected area with alkaline soap, do not use hot water to wash the affected area, do not apply cosmetics or any oil.
3, room temperature should not be too high, otherwise it will make the eczema itching. Clothes should be worn loosely, with cotton as well.
4, the area of small eczema can be easily applied ointment, should not be painted too thick; patients with more eczema, need to go to the dermatology diagnosis and treatment. Do not wash the seborrheic eczema with soapy water. Just apply some vegetable oil to make the suede soften gradually, then gently comb it with a comb.
Complication
Allergic eczema complications Complications dermatitis
The cause is removed, the simple erythema subsides within a few days, the blisters are dry, and the blisters and large bubbles can rupture, exudate and scar. If the inflammation subsides, there are scales, and sometimes the skin will temporarily thicken. Continued contact with pathogenic factors or complications (such as irritation or topical allergy, epidermal exfoliation, infection) can persist dermatitis.
Symptom
Symptoms of allergic eczema common symptoms skin itching skin maculopapular erythematous rash
1. Acute eczema
(1) The skin lesions are pleomorphic. After a certain regularity, they begin to be diffuse flushing, and later develop into papules, blisters, erosions, exudates, scars, and constant seed lesions coexist.
(2) The lesion is often flaky or diffuse, with no obvious boundary. Can be concomitant in all parts of the body, but more common in the head, face, distal extremities, scrotum. Often symmetrical onset, severe cases can be generalized.
(3) After rapid, the inflammation is obvious, and it tends to be wet and smashed. After appropriate treatment, it can be cured in about 2 to 3 weeks, but it is often easy to recur.
(4) consciously burning and severe itching.
2, subacute eczema
(1) It is a stage between acute and chronic eczema, often caused by acute eczema failure to treat or treat improperly.
(2) Skin lesions are lighter than acute eczema, mainly papules, crusting, and scales, with only a small amount of blisters and mild erosion.
3. Chronic eczema
The onset of eczema, some only in the acute or subacute phase, cured a few weeks later, but often due to repeated attacks, each period can be crossed or coexisting. Therefore, various stages of rash can be seen at different sites. Both skin thickening and mossy changes, as well as new papule blisters or redness and erosion, crusting, scaling and so on. There are also a small number of patients with acute eczema at the beginning of the performance is not obvious, manifested as subacute or even chronic eczema.
Examine
Allergic eczema check
There are three main methods for detecting allergic eczema:
1. Sting test;
2. Intradermal test;
3, patch test.
Diagnosis
Diagnosis of allergic eczema
It can be diagnosed based on clinical manifestations, medical history and laboratory tests.
