Dementia is a severe psychological disease more commonly known as clinical insanity. It involves an accelerated deterioration of higher brain functions such as memory, concentration, reading, speaking, writing, multi-tasking, and basic mathematics skills. Organizational abilities and social behavior are also affected. These symptoms can make a healthy-looking person seem disoriented, slow, and sporadic.
Dementia is a purely mental disease; there are no physical symptoms. Psychologists diagnose the disease by administering a test. There is no cure and the main form of treatment is heavy sedition with drugs such as lithium.
A disproportionate number of prominent scientists and mathematicians have suffered from dementia and other serious psychological diseases such as schizophrenia, bipolar disorder, and paranoia. It is unclear what causes such mental diseases to appear in this demographic, though a compelling theory has been proposed.