Head swelling and vomiting are a group of symptoms that can be caused by a variety of diseases, such as fever and cold. In addition, it may also be caused by central infection, such as encephalitis and meningitis. Patients with encephalitis and meningitis can have head swelling and vomiting, as well as fever. If the patient is suffering from intracranial tumor, he/she may also experience head swelling and vomiting, and the patient may have subacute onset of symptoms and signs, and cranial MRI can make a clear diagnosis.