Brain lesions are areas of damaged brain tissue that result from injury or disease. They can be caused by a variety of factors, including injury, infection, exposure to certain chemicals, problems with the immune system, and more. Brain lesions can disrupt the way the brain works, causing a wide range of symptoms, such as weakness, disruption of one or more senses, and confusion. The symptoms of a brain lesion vary depending on the type, location, and size of the lesion.

The most common way to detect brain lesions is with diagnostic imaging scans. Depending on the cause, some types of brain lesions will heal on their own or are treatable. However, some brain lesions are permanent or happen for reasons that can’t be treated or cured. Brain lesions can indicate a severe or even life-threatening issue, such as a stroke, which is a time-sensitive medical emergency. If someone is experiencing symptoms of a stroke or other serious brain lesion, it is important to seek medical attention immediately by calling 911 or the local emergency services number.