Mental illnesses you have not even heard of!

Capras Delusion, named after Joseph Capgras, a French psychiatrist who was fascinated by the illusion of doubles, is a debilitating mental disorder in which one believes that the people around them have been replaced by imposters. Furthermore, these imposters are usually thought to be planning to harm the sufferer. In one case, a 74-year old woman with Capgras Delusion began to believe that her husband had been replaced with an identical looking imposter who was out to hurt her. Capgras Delusion is relatively rare, and is most often seen after trauma to the brain, or in those who have been diagnosed with dementia, schizophrenia, or epilepsy.