My 19 yr old son has a hole above his anus it does bleed when he goes to the bathroom what is it ?

Needs eval.: Could be pilonidal cyst or fistula. Fistula would prompt evaluation for inflammatory bowel disease.

? FISTULA: By your general description, i suspect he may have a fistula, which is a small channel from the anorectal canal to the surface skin. It may just be a pilonidal cyst, but he should see a doctor who could evaluate him, and then refer to an appropriate specialist, if necessary. Make the appointment. Good luck.