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2022年9月11日 · A brain hemorrhage is a type of stroke. It's caused by an artery in the brain bursting and causing localized bleeding in the surrounding tissues. This bleeding kills brain cells. Brain...
- Clinical significance
- Pathophysiology
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- Prognosis
- Symptoms
A subdural hematoma is a collection of blood outside the brain. Subdural hematomas are usually caused by severe head injuries. The bleeding and increased pressure on the brain from a subdural hematoma can be life-threatening. Some subdural hematomas stop and resolve spontaneously; others require surgical drainage.
In a subdural hematoma, blood collects between the layers of tissue that surround the brain. The outermost layer is called the dura. In a subdural hematoma, bleeding occurs between the dura and the next layer, the arachnoid. The bleeding in a subdural hematoma is under the skull and outside the brain, not in the brain itself. As blood accumulates, ...
Subdural hematoma is usually caused by a head injury, such as from a fall, motor vehicle collision, or an assault. The sudden blow to the head tears blood vessels that run along the surface of the brain. This is referred to as an acute subdural hematoma.
People with a bleeding disorder and people who take blood thinners are more likely to develop a subdural hematoma. A relatively minor head injury can cause subdural hematoma in people with a bleeding tendency.
In a chronic subdural hematoma, small veins on the outer surface of the brain may tear, causing bleeding in the subdural space. Symptoms may not be apparent for several days or weeks. Elderly people are at higher risk for chronic subdural hematoma because brain shrinkage causes these tiny veins to be more stretched and more vulnerable to tearing.
2023年12月6日 · What Is a Brain Aneurysm? A brain aneurysm is a weak spot in the wall of a blood vessel inside the brain that can sometimes burst and cause a subarachnoid hemorrhage. Think of a weak spot in a...
2023年9月20日 · Top Causes of Stroke. Medically Reviewed by Zilpah Sheikh, MD on September 20, 2023. Written by WebMD Editorial Contributors. Types. Causes. 3 min read. A stroke happens when blood flow to a part...
2022年9月11日 · A mild brain injury may be temporary. It causes headaches, confusion, memory problems, and nausea. In a moderate brain injury, symptoms can last longer and be more pronounced. In both cases, most ...
2023年7月13日 · Problems thinking or with judgment. Feelings of agitation. Sleepiness. . If you feel any of these symptoms, you should immediately go to the hospital. . Thalamic strokes can also present ...
2023年4月8日 · A stroke, sometimes called a " brain attack," occurs when blood flow to an area in the brain is cut off. The brain cells, deprived of the oxygen and glucose needed to survive, die. If a stroke is...
