Urticaria is not AIDS. Urticaria usually occurs when the body is allergic to certain substances in the external environment, and the main clinical manifestation is a large rash on the skin accompanied by significant itching. Treatment can be anti-allergic treatment and removal of allergens. AIDS is an acquired immunodeficiency syndrome, which is caused by human infection with the AIDS virus, which continuously replicates in the body and attacks the body’s CD4-T lymphocytes, resulting in a continuous decline in CD4-T lymphocyte counts, thus causing immune deficiency and eventually a variety of opportunistic infections and malignant tumors, from which the patient will eventually die. The treatment of AIDS is not curable worldwide, but can only be done by using antiviral drugs to inhibit the replication of the virus, turning AIDS into a chronic disease similar to hypertension and diabetes.