Repeated hives are not a sign of AIDS. Hives are not a sign of AIDS. Hives are caused by the patient’s exposure to the corresponding allergic substance, while recurrent hives are caused by the patient’s repeated exposure to the allergic substance and not free from the allergen, which is also related to the patient’s abnormal immune function. AIDS is an immunodeficiency syndrome caused by HIV infection. After contracting AIDS, patients will go through a very long asymptomatic period and eventually enter the AIDS phase. During the AIDS phase, patients may develop a variety of opportunistic infections due to immune deficiency, such as pneumocystis pneumonia, cryptococcal meningitis, herpes zoster, and giant cell retinitis. Patients may have fever, night sweats, diarrhea, and weight loss of more than 10% for more than 1 month, but they do not have hives.