Hematoma of the intracerebral membranes is an acute, usually a consequence of injury, intradural accumulation of blood, gradually increasing in size with symptoms of intracranial hypertension. In the acute period, they note: a severe headache of a bursting nature, often with nausea and vomiting, sometimes with convulsions. Increased sensitivity of the scalp. Drowsiness, lethargy, and focal symptoms are absent.