Intracranial hematomas are accumulations of blood within the brain or between the brain and the skull. An intracranial hematoma may occur because the fluid that surrounds your brain can't absorb the force of a sudden blow or a quick stop. The cause of intracranial bleeding (hemorrhage) usually is a head injury, often resulting from automobile, motorcycle or bicycle accidents, falls, assaults, and sports injuries.
Symptoms may include a persistent headache, drowsiness, confusion, memory changes, paralysis on the opposite side of the body, speech or language impairment, and other symptoms depending on which area of the brain is damaged. Some hematomas don't need to be removed because they're small and produce no signs or symptoms. But because signs and symptoms may appear or worsen days or weeks after the injury, if you don't have surgery, you may have to be watched for neurological changes, have your intracranial pressure monitored and undergo repeated head CT scans.
In the United States blacks and Hispanics have significantly higher rates of ICH than whites. There was an annualized increase in the admission rate of ICH from about an average of 24,000 cases (12.9 per 100,000 persons per year) during the first epoch to 40,600 cases (17.0 per 100,000 persons per year) during the second epoch. Thereafter, the annual admission rate after ICH remained stable with about 63,000 cases (21 per 100,000 persons per year) during the last epoch. Nonwhites experienced higher growth rates than whites, and the risk of ICH was higher across all age subgroups, in men than women, and nonwhites compared with whites. In-hospital mortality after ICH fell significantly from 45 % (95 % CI, 31-59 %) during the first epoch (1979-1983) to 34 % (95 % CI, 20-38 %) during the second epoch (1984-1988) (p = 0.03) but did not change significantly after that. Groups with higher in-hospital mortality were whites, women, and persons older than 65 years, black women younger than 45 years, and middle-aged black men. Average days of care for ICH hospitalizations decreased significantly.