The soreness on the outside of the thigh is probably due to prolonged over-exercise, which is a phenomenon caused by lactic acid accumulation, so don’t worry too much, the situation will be relieved after a few days of rest. If the outer thigh is sore for a long time, it is likely due to a disease, such as muscle strain or muscle strain. When there is a disease in the lumbar spine, it can also compress the nerves in the thigh area and cause soreness and swelling. Patients in this case should go to the hospital for relevant examination and do some symptomatic treatment in time. In addition, the patient’s legs are cold, cold or in a cold, cold and wet environment for a long time, sometimes there will be soreness and swelling, the patient can apply heat to the soreness and swelling, and pay attention to the warmth of the outer thigh area. In the process of soreness and swelling in the outer thighs, try to avoid overexertion and do not do squatting exercises.