hi there im 25 and i have something to ask...I have this little hole right at the top of the bum crack and i have yellowish/greenish puss coming out and its all hard around it this is the first time its happend is there an answer for this if so plz right back thanx
Welcome to Chat Doctor You probably have a colonial sinus which is infected. It requires Chat Doctor.  Surgery may be indicated according to the chronicity to close this tract. It is seen in hairy men commonly. Consult your Surgeon at a Hospital for the various treatment options and the best option for you.