Some patients with AIDS may experience arthralgia. In addition to joint pain, there are other clinical symptoms such as fever, sore throat, nausea, vomiting, diarrhea, skin rash, swollen lymph nodes, etc. Most of these symptoms occur during the acute infection period, which is about two weeks after HIV infection, and are mild and disappear on their own after about a week. If the symptoms of joint pain are more obvious or accompanied by local swelling and redness, then it is necessary to be alert to the presence of other diseases, such as autoimmune diseases, and further improvement of relevant antibodies or local magnetic resonance examination is needed to clarify.