There is a very rare type of insomnia when you just don’t sleep. This leads to insanity and death within 18 months
The disease has four stages:
1. The person has increasing insomnia, resulting in panic attacks, paranoia, and phobias. This stage lasts for about 4 months.
2. Hallucinationsand panic attacks become noticeable, continuing for about 5 months.
3. Complete inability to sleepis followed by rapid loss of weight. This lasts for about 3 months.
4. Dementia, during which the patient becomes unresponsive or mute over the course of 6 months, is the final stage of the disease, after which death follows.
This YouTube channel shows arc of a man’s illness: old videos show him healthy/doing tattoo work, later he’s diagnosed with fatal insomnia (losing 100% capacity to sleep), getting no sleep for over a year, & mentally unravels [videos about God, conspiracy theories, planetary diagrams, etc] before passing away.