The expressionistic horror short Rubber Johnny (2005) directed by Chris Cunningham shows a wheelchair-bound teenager with hydrocephalus, isolated in an appalling basement with rats and his chihuahua. It was shot in infra-red digital. The soundtrack is by electronica legend Aphex Twin.
The chi is played by Elvis. The kid in the wheelchair is played by the director. I love this film which can be viewed on-line, though if you get the dvd it comes with a fourty-page book. If you are adverse to horror don't view this, as it is the real deal!