Pick's disease, a type of frontotemporal dementia, is a rare neurodegenerative disease that causes progressive destruction of nerve cells in the brain. Symptoms include dementia and loss of language (aphasia). While some of the symptoms can initially be alleviated, the disease progresses and patients often die within two to ten years. A defining characteristic of the disease is build-up of tau proteins in neurons, accumulating into silver-staining, spherical aggregations known as "Pick bodies".