Epidural hematoma, also known as an extradural hematoma, refers to a type of bleeding between the skull and the outermost covering of the brain. It is a potentially life-threatening condition that requires immediate medical attention. Other synonyms for epidural hematoma include skull hematoma, extracranial hematoma, parietal hematoma, or epidural hemorrhage. These terms all refer to the accumulation of blood in the space between the skull and the dura mater. Symptoms of epidural hematoma may include headache, nausea, vomiting, seizures, and loss of consciousness. Treatment usually involves surgery to remove the blood clot and relieve any pressure on the brain.