There are several reasons for hip pain during fever: 1. Inflammatory mediators are released when the body is infected with inflammatory factors in the body, including interleukin-4, interleukin-6, leukotrienes, bradykinin, prostacyclin and so on. The above-mentioned inflammatory factors can cause abnormal skin sensitivity in the body, such as painful sensations like burning pain and tingling of the skin, and the accumulation of inflammatory factors in the buttocks during fever can lead to pain in the buttocks.2. Hip pain during fever should be observed for septic tissue inflammation of the infected skin tissue around the buttocks. 3. When the hip is infected with peripheral neuritis, it may also cause severe pain and fever.