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2023年10月25日 · Dyslexia is a learning disorder that makes it hard for you to read, spell, and write. People who have it are often smart, but their brains have trouble connecting letters they see to the sounds...
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- Overview
- Causes
- Symptoms
- Clinical significance
- Classification
- Pathophysiology
When you scrape your elbow, it leaves an area of inflamed skin, or a lesion. But what are lesions in the brain? And what causes them? How serious are brain lesions and how are they treated? Here is information about this confusing and unsettling health concern. A lesion is an area of tissue that has been damaged through injury or disease. So a brai...
Brain lesions can be caused by injury, infection, exposure to certain chemicals, problems with the immune system, and more. Typically, their cause is unknown.
Symptoms of a brain lesion vary depending on the type, location, and size of the lesion. Symptoms common to several types of brain lesions include the following:
Although they share a common definition -- injury or damage to tissue within the brain -- brain lesions vary greatly. Here are some common brain lesions.
Abscesses: Brain abscesses are areas of infection, including pus and inflamed tissue. They are not common, but they are life threatening. Brain abscesses often occur after an infection, usually in a nearby area, such as an ear, sinus, or dental infection. They can also appear after injury or surgery to the skull.
Arteriovenous malformations (AVMs): An AVM is a type of brain lesion that occurs during early development. Arteries and veins in the brain grow in a tangle and become connected by tube-like structures called fistulae. The arteries are not as strong as normal arteries. The veins are often enlarge because of the constant flow of blood directly from t...
