What is allergic rash?

The so-called allergic rash is actually mainly caused by some skin damage caused by the patient showing allergic factors. These skin damages may show certain papules, papules or erythema. Sometimes they may show wheals. For example, if urticaria induced by allergic factors is shown, they will show large areas of wheals all over the body. If eczema is shown, they may show erythema, papules, papules, etc. If contact dermatitis is present, especially allergic contact dermatitis caused by allergic factors, it will also show localized skin inflammatory manifestations, resulting in erythema and papules on the basis of erythema, which may be accompanied by certain inflammatory exudates. Most of these allergic rashes exhibited by patients may be accompanied by obvious itching.