The most common one may be hives, which is mainly manifested as a symptom of wind clumps, so it looks like red clumps. Urticaria clinically requires anti-allergy treatment and can be treated with appropriate oral antihistamines, such as oral loratadine, epinephrine, paracetamol, etc. If the itching is more obvious, it is also necessary to appropriately cooperate with Chinese medicine, such as anti-wind and anti-itch granules, and can also be applied externally to relieve itching and eliminate erythema. Of course, if you really suspect that there is AIDS, you can also go to the hospital to check the HIV antibody.