hikikomori

One morning when he was 15, Takeshi shut the door to his bedroom, and for the next four years he did not come out. He didn't go to school. He didn't have a job. He didn't have friends. Month after month, he spent 23 hours a day in a room no bigger than a king-size mattress, where he ate dumplings, rice and other leftovers that his mother had cooked, watched TV game shows and listened to Radiohead and Nirvana.
He ...suffered from a problem known in Japan as hikikomori, which translates as "withdrawal" and refers to a person sequestered in his room for six months or longer with no social life beyond his home. (The word is a noun that describes both the problem and the person suffering from it and is also an adjective, like "alcoholic.") Some hikikomori do occasionally emerge from their rooms for meals with their parents, late-night runs to convenience stores or, in Takeshi's case, once-a-month trips to buy CD's. And though female hikikomori exist and may be undercounted, experts estimate that about 80 percent of the hikikomori are male, some as young as 13 or 14 and some who live in their rooms for 15 years or more.
South Korea and Taiwan have reported a scattering of hikikomori, and isolated cases may have always existed in Japan. But only in the last decade and only in Japan has hikikomori become a social phenomenon. Like anorexia, which has been largely limited to Western cultures, hikikomori is a culturebound syndrome that thrives in one particular country during a particular moment in its history.
Any urge a hikikomori might have to venture into the world to have a romantic relationship or sex, for instance, is overridden by his self-loathing and the need to shut his door so that his failures, real or perceived, will be cloaked from the world.
...Otherwise, the only evidence that this was a hikikomori's room were three holes in the wall - the size of fists. Shut-ins often describe punching their walls in a fit of anger or frustration at their parents or at their own lives. The holes were suggestive too of the practice of "cutting" among American adolescent girls. Both acts seemed to be attempts to infuse feeling into a numb life.