Types of Hemorrhage

Epidural hematoma is when bleeding occurs between the tough outer membrane covering the brain (dura mater), and the skull. Often there is loss of consciousness following a head injury, a brief regaining of consciousness, and then loss of consciousness again.

Hemophilia A, also called factor VIII (FVIII) deficiency or classic hemophilia, is a genetic disorder caused by missing or defective factor VIII, a clotting protein. Although it is passed down from parents to children, about 1/3 of cases are caused by a spontaneous mutation, a change in a gene.

Moderate hemophilia B. 1% up to 5% of FIX in the blood. People with moderate hemophilia B tend to have bleeding episodes after injuries. Bleeds that occur without obvious cause are called spontaneous bleeding episodes. Severe hemophilia B. <1% of FIX in the blood.

What are intracranial hemorrhage, cerebral hemorrhage, and hemorrhagic stroke? An intracranial hemorrhage is a type of bleeding that occurs inside the skull (cranium). Bleeding around or within the brain itself is known as a cerebral hemorrhage (or intracerebral hemorrhage).

An intracranial hemorrhage is a type of bleeding that occurs inside the skull (cranium). Bleeding around or within the brain itself is known as a cerebral hemorrhage (or intracerebral hemorrhage). Bleeding caused by a blood vessel in the brain that has leaked or ruptured (torn) is called a hemorrhagic stroke.

These very rare factor deficiencies, from factor XIII deficiency, the rarest, occurring in an estimated 1 out of 5 million people, to factor XI deficiency, occurring in about 1 out of 100,000, were all discovered and identified in the 20 th century.

Subarachnoid hemorrhage (SAH) refers to bleeding within the subarachnoid space, which is the area between the brain and the tissues that cover the brain. The subarachnoid space is the space where the cerebrospinal fluid circulates, and it’s responsible for protecting your brain from injury by serving as a cushion.

The bleeding in a subdural hematoma is under the skull and outside the brain, not in the brain itself. As blood accumulates, however, pressure on the brain increases. The pressure on the brain causes a subdural hematoma's symptoms.

Von Willebrand disease is a bleeding disorder. It’s caused by a deficiency of von Willebrand factor (VWF). This is a type of protein that helps your blood to clot. Von Willebrand is different from hemophilia, another type of bleeding disorder. Bleeding happens when one of your blood vessels breaks.