261. There's a rare mental disorder of health where people imagine that they are decomposing, dead or non-existent.

262. "Erotomania" is a psychological disorder in which the affected people believe a famous person is in love with them.

263. Around 6% of people have narcissistic personality disorder. They have a strong sense of self-importance and lack empathy.

264. About 1 million Japanese men are estimated to be locking themselves in their bedrooms for years, creating social and health problems, a condition called "Hikikomori."

265. "Time anxiety" occurs in a person when they are perpetually afraid of being late, or of others being late.