Pain in the outer thigh is not always rheumatism. First, it is important to clarify whether the pain is in the muscles of the thigh or in the local skin. If the pain is in the skin and is accompanied by ecchymosis, it is important to note whether there has been any recent trauma. This is because if there is trauma, there may be localized swelling and pain in the skin and soft tissues, which may also lead to pain in the outer thigh. It is also important to pay attention to the presence of local skin rashes, especially herpes, which can cause significant nerve pain when herpes zoster is present. In addition, some rheumatic diseases can also lead to thigh muscle pain, such as polymyositis, dermatomyositis, systemic lupus erythematosus, dry syndrome, mixed connective tissue disease, etc. may lead to thigh muscle pain, so go to the hospital to improve the relevant examination to clarify the specific lesions before doing the appropriate treatment.