AVM
AVM hemorrhage
About an AVM hemorrhage
Unfortunately, the first symptom of an AVM in the brain is often a cerebral hemorrhage, a type of stroke. read moreWhat is a cerebral hemorrhage?
During a cerebral hemorrhage, a blood vessel in the brain bursts, causing blood to accumulate in the brain tissue, resulting in immediate damage. read moreWhat is a cerebral hemorrhage?
During a cerebral hemorrhage, a blood vessel in the brain bursts, causing blood to accumulate in the brain tissue, resulting in immediate damage. A cerebral hemorrhage can occur as a result of a blow to the head (trauma) or as a result of bleeding from a malformation of the blood vessels. A hemorrhage can also occur if there is no malformation of the blood vessels. This is often associated with prolonged high blood pressure, or an accumulation of proteins in the blood vessels (cerebral amyloid angiopathy).We can distinguish between certain types of hemorrhage by:
- the area in the skull where the blood accumulates
- the reason why the blood vessel burst (the underlying condition or “etiology”)
Position of the hemorrhage
There are four types of cerebral hemorrhage based on the site of the hemorrhage:- Intracerebral hemorrhages or intraparenchymal hemorrhages. These hemorrhages are located in the brain tissue.
- Subarachnoid hemorrhages. These hemorrhages take place beneath (sub) the so-called arachnoid mater and the brain. This is why they are called subarachnoid hemorrhages.
- Subdural hemorrhages. These hemorrhages take place beneath (sub) the membrane covering the brain (dura). This is why they are called subdural hemorrhages.
- Epidural hemorrhages. These hemorrhages take place on (epi) the membrane covering the brain (dura). This is why they are called epidural hemorrhages.
Reason for the hemorrhage
The cause of the burst blood vessel is linked to the site of the hemorrhage. However, some overlap is possible.- Hemorrhages from a brain aneurysm cause subarachnoid hemorrhages, but sometimes also intracerebral hemorrhages.
- Vascular malformations in the brain usually cause intracerebral hemorrhages, but sometimes also subarachnoid hemorrhages.
- Traumatic injury to the head can result in subdural and epidural hemorrhages, but can also cause subarachnoid and intracerebral hemorrhages.