There are many reasons for fever on the outside of the calf, such as lumbar disc herniation after compression of nerves, which can cause numbness and fever in the legs, mainly active treatment of lumbar disc herniation, giving local physiotherapy, electroacupuncture, acupuncture, massage, etc.. If necessary, you can do lumbar traction, and also give nerve nutrition and improve microcirculation medication. In addition, there may be a local vascular circulation disorder, you can do an ultrasound of the arteries or veins of the lower limbs to see. In addition, we need to see if there are any skin diseases, such as skin allergies, local eczema, itching, etc., and whether there is poor blood circulation. Usually pay attention to keep warm, avoid local cold, avoid repeated leg friction, and sleep on a hard bed. Adhere to appropriate exercise every day, avoid overexertion, combine work and rest, and avoid weight bearing.