Few patients recover fully and most are left with some disability, but the majority exhibit some degree of spontaneous recovery. Doctors and scientists don't fully understand how this happens, because the brain does not grow new cells to replace the ones damaged by the stroke.
Some brain cells die quickly but many linger in a compromised or weakened state for several hours. Stroke causes permanent brain damage over minutes to hours. With stroke, “time is brain,” meaning that the sooner treatment begins, the better.
Treatment focusses on stopping the bleeding, removing the clot and relieving pressure on the brain. If left alone, the brain will eventually re-absorb the clot. The damage done by increased brain pressure over a long period may be irreversible.
Intracranial hemorrhage encompasses four broad types of hemorrhage: epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage results from different etiologies and the clinical findings, prognosis, and outcomes are variable.