Headache. The first symptom is typically headache, but alteration in consciousness can follow quickly depending on the cause and severity.
High brain pressure. The characteristic symptoms of increased pressure within the skull are headaches that get worse at night and/or wakes up the patient from sleep. Often there is vomiting associated. Headaches also get worse with sneezing, coughing and bearing down. Some patients may only have vomiting. A heartache that wakes up the patient early in the morning and is followed by vomiting is worrisome.