Alzheimer's disease it is the most common form of dementia, and which worsens as it progressed, and eventually leads to death. It was first described by German psychiatrist and neuropathologist Alois Alzheimer in 1906 and was named after him. Most often, it is diagnosed in people over 65 years of age, and although the less-prevalent early-onset Alzheimer's can occur much earlier.
On Old Terra, it had conquered more than three hundred years before humanity met the Gbaba. (LAMA)