People with Bordeline personality disorder are often terrified of being abandoned or left alone. Even something as innocuous as a loved one getting home late from work or going away for the weekend can trigger intense fear.
Frequent making of jokes, including puns, can be a diagnosed disorder, possibly caused by a stroke.
In 1954, an Irishman, after taking “a good swig” from a beer bottle, saw leprechauns all over the place. Unfortunately, the beer bottle contained not beer but a highly poisonous industrial chemical. He realized his mistake at once, drunk salt water and got some of it up. Nevertheless he was “deeply inebriated” and went into coma for 36 hours. Coming out of the coma he had paranoid delusions. That night he awoke in delirium and saw that the ward was its usual length, but only was about two feet high. “In response to my cries, a little nurse 12 inches high ran to my bed. I told her I was afraid, so she tried to reassure me and went away to get a hot drink. While she was away, other nurses came to bedside and were later followed by a doctor. They were all about 12 inches tall. I recognized all of them as the nurses and doctor I had seen before. The only other person besides myself who seemed the normal size was a patient in the bed next to mine. I was terribly afraid while all this was going on. They changed my shirt and gave me an injection. The next morning everything went back to its usual size.” Today, this disorienting neurological condition is known as Alice in Wonderland syndrome or lilliputian hallucinations.
A psychological condition called “Koro” makes sufferers believe that their genitals have been stolen.
There’s a psychological disorder where you believe that you and everyone you love is already dead. Patients with Cotard’s Disorder often stop eating and believe that they are in heaven or hell.
Dale Decker, a 37-year-old from Wisconsin, slipped a disc and now suffers from Persistent Genital Arousal Syndrome. He orgasms 100 times a day. It would be a fantastic problem to have, were it not for the fact that he experiences involuntary, crippling orgasms so often that he can barely leave his house — much less work.
Walking Corpse Syndrome is a mental disorder in which patients experience delusions that they are dead, do not exist, are putrefying or have lost their vital organs.
There is a medical condition named akinetopsia where you cannot perceive the motion of objects but can still see acutely and recognize objects normally. Everything seems to be frozen in time only to “jump ahead” in time and freeze again.
The “glass delusion” is a psychiatric disorder, recorded in the late Middle Ages in which the sufferers believed themselves to be made out of glass and likely to shatter into pieces. One famous early sufferer was King Charles VI of France who refused to allow others to touch him and wore protective clothing to prevent himself from “shattering”. To maintain a perfectly serene environment he required all the windows in his palace to remain shut and that anyone who approached him to do so on tip-toe.
A rare chronic sleep disorder called Fatal Familial Insomnia, renders the victim unable to sleep. One man diagnosed with the illness, Michael Corke, died a month after his 42nd birthday, by which time he had been completely sleep-deprived for six months. It has no known cure.