What Are the Different Types of Brain Lesions?
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. Alzheimer’s disease and other dementias: Alzheimer’s disease and some types of dementia are another group of brain lesions. In these lesions, nerve cells die, leaving behind damaged areas of the brain. Gradually, brain function in those areas decreases. 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.The veins are often
