Patients with organic brain lesions in neurologically quiet brain regions may only exhibit mental symptoms such as sadness, anxiety disorders, schizophrenia, anorexia nervosa, or cognitive impairment. Patients with more severe injuries to these areas may also display aggressive behaviors and/or suicidal tendencies. The severity of anxiety symptoms in patients with brain lesions varies depending on the location of the lesion within the brain and the type of injury it causes. For example, a patient with a large area of brain damage due to stroke or tumor may become anxious when they experience something that triggers memories of the incident that caused their injury. In other cases, patients may appear completely normal even though they have extensive damage within specific brain regions. For example, someone who has lost part of their frontal lobe due to Alzheimer's disease may appear relatively normal while talking with you, but if we looked inside their skull, we would see that this region is not functioning properly. They would be unable to control some of their actions (such as yelling at strangers), but because it is difficult to identify emotion in such people, they may seem calm overall. In some cases, brain lesions can cause anxiety disorders. If you are suffering from anxiety disorders, your symptoms may be due to a medical condition or problem that can be treated or cured.