The idea that thigh pain is a precursor to serious illness is unsubstantiated and unscientific. For example, thigh pain caused by lactic acid buildup after exercise is usually relieved after a few days of rest. If the thigh pain is caused after exercise, it is mostly due to the accumulation of lactic acid, which is usually manifested as swelling pain and can be relieved after a few days of rest. If the thigh muscle pain is caused by long-term exercise, generally related to muscle damage, at this time to pay more attention to rest, follow the doctor’s instructions to take blood circulation drugs, such as Yunnan Baiyao, panax ginseng tablets and other relief. There are many other causes of thigh pain, such as sciatica, hip fasciitis, etc., are common diseases, can be recovered after treatment. Therefore, it is not possible to simply say that thigh pain is a precursor to a serious illness. When thigh pain occurs without any cause and persists without relief, it is necessary to consult a doctor in a timely manner to identify the cause of the disease and then carry out targeted treatment and therapy.