There are many reasons for head pain. Some are caused by peripheral factors. For example, if the body temperature is relatively high, a cold, lung inflammation or intracranial inflammation, encephalitis, meningitis, etc. may lead to head pain. In addition, elevated blood pressure can also cause headaches. Others are caused by mental and emotional factors. Emotional fluctuations, climate change, staying up late, smoking too much, and drinking too much may also lead to head pain. Brain lesions. The head has been injured, there is ischemia or bleeding in the brain, the tumor in the brain has some hydrocephalus, or congenital abnormality, which may also lead to head pain.