What are the symptoms of contact dermatitis

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These days, I found that my younger brother kept scratching his skin, so I asked what happened. My younger brother replied that it was itchy. I had a look, and there was a large erythema on his leg, which should be dermatitis. Now let me talk about the symptoms of contact dermatitis.

What are the symptoms of contact dermatitis

First, the distribution of lesions. Skin lesions are often distributed in the contact area, with a certain shape and clear boundary, and are related to the contact mode of the pathogen. According to the location of the disease, the possible cause of the disease can be found. For example, allergic reactions to cosmetics and hair dyes are often considered for head and face contact dermatitis, and the skin lesions caused by allergic reactions to underwear dyes can be distributed in the shape of pants.

Second, the characteristics of skin lesions. Erythema, papule and herpes with clear boundary, and obvious redness and swelling with blisters or bullae in severe cases. The blister wall is tense and the content is clear. After the blister is broken, it is erosive surface. In severe cases (such as strong acid and strong alkali), the epidermis may be peeled off or even necrotic. In the skin tissue is loose, such as the face, scrotum and other places often have obvious swelling.

Third: conscious symptoms. Self conscious pruritus, burning sensation, occasionally pain. Patients with generalized skin lesions may have fever, headache, discomfort and other systemic symptoms. The course of disease is self limited. The symptoms of dermatitis develop to the peak within a few days. If the patient has been out of contact with the pathogen, it can gradually subside within 1-2 weeks, leaving temporary pigmentation. A few patients in the process of repeated contact, the sensitivity of contact material gradually decreased or tolerance improved, desensitization tolerance state occurred and improved or recovered.

matters needing attention

Contact dermatitis is a common skin disease, which is caused by external adverse stimulation. The above briefly introduces some common symptoms of contact dermatitis. In addition to erythema, most patients will feel itchy and painful.