as you know i have no way of seeing your boyfriend's tailbone area but based on your description he may have a pilonidal sinus tract. you can do some personal research on this relatively-common condition on the internet by putting those words in your search engine. the only cure of pilonidal sinus tracts especially ones that occasionally or frequently become infected is their surgical removal. it is important that this area remain very clean and if possible hair-free. hairs can occasionally grow into these open areas and some have hair follicles within them. when this happens there is a greater chance of a secondary infection.
my boyfriend has a 2 deep holes formed below his tailbone <negative_smiley>. my boyfriend has a 2 deep holes formed below his tailbone. a long time ago he fractured his tail bone. a large inflammed area appeared last year and went away. there was still a small bump there but it went away after a while. it came back 2-3 months later. sometimes it swelled and hurt and drained. sometimes it doesn't hurt. now there is 2 deep holes instead of one. they are a little bigger than the size of a pin point. helppppppp