There are rare neurological disorders that can cause horrifying symptoms and conditions

One such condition is Alien Hand Syndrome, where a person's hand appears to act on its own

Another rare disorder is Fatal Familial Insomnia, which causes the sufferer to gradually lose their ability to sleep, leading to death.

Cotard Delusion is a condition where the sufferer believes they are dead or do not exist.

Kuru is a prion disease that was once prevalent in Papua New Guinea, causing neurological degeneration and death.

Foreign Accent Syndrome is a condition where a person's accent changes dramatically after a neurological event.

Capgras Delusion is a condition where the sufferer believes that someone close to them has been replaced by an impostor.

 Exploding Head Syndrome is a condition where a person experiences loud, explosive noises in their head during sleep.

Alice in Wonderland Syndrome is a disorder where the sufferer perceives their own body or the surrounding environment as distorted in size or shape.

Sundowning is a condition commonly experienced by people with dementia, where symptoms worsen in the evening, causing confusion and agitation.