Skin disease types and symptoms

There are many kinds of skin diseases, such as eczema, acne, psoriasis, urticaria, vitiligo, etc. The following is a detailed introduction to these skin diseases and their symptoms. 1. Ecstasy can be divided into acute, subacute and chronic three types. Acute eczema is characterized by erythema, papules, blisters, erosions, exudates, etc., often accompanied by severe itching; subacute eczema is mainly papules, scales, crusts; Chronic eczema is skin thickening, rough, lichen-like change. The causes of eczema are more complex, may be related to genetic, allergic, infection, endocrine and other factors. 2. Acne is mainly manifested as acne, papules, pustules, nodules, cysts, etc. on the face, chest, back, etc. The occurrence of psoriasis is closely related to excessive sebum secretion, abnormal keratinization of hair follicle sebaceous ducts, reproduction of acne propionibacterium, inflammatory reaction, etc. 3. Typical symptoms of psoriasis are erythema and scales on the skin, and film phenomenon and punctate bleeding can be seen when scales are scraped off. It can occur everywhere in the body, common in the scalp, limbs and so on. The etiology of psoriasis is not completely clear, may be related to genetic, immune, environmental and other factors. 4. Urticaria is characterized by sudden appearance of different sizes and shapes of wheals on the skin, accompanied by obvious itching. The wheals can subside within a few hours, but they are easy to recur. The causes of urticaria include food, drugs, infections, physical factors, etc. 5. Vitiligo is mainly characterized by depigmentation of the skin, milky white or porcelain white, clear boundaries. It can occur in any part of the body, common in the face, neck, back of the hand and other exposed parts. Its pathogenesis is related to autoimmune, genetic, neuropsychiatric and other factors.