Patients with headache and head distension may have cerebrovascular disease, intracranial infection, mental factors and so on, as follows: I. Cerebrovascular disease: If patients have acute headache and head distension accompanied by nausea and vomiting, as well as numbness, weakness of the limbs and slurred speech, the most common clinical cause may be cerebrovascular disease. Second, intracranial infection: If the patient has headache and head swelling accompanied by fever, nausea, vomiting, etc., it may be intracranial infection. Third, mental factors: If patients suffer from long-term insomnia, anxiety and tension, it may also lead to headache and head distension. There are many kinds of diseases that may lead to headache and head swelling. Dizziness and head swelling are the most common clinical manifestations, and the specific causes of headache and head swelling should be judged according to different manifestations, whether they are acute onset or chronic diseases, and how about the accompanying symptoms.