I've been having this lump on my buttocks (maybe an inch or 1 and a half inch in diameter). from time to time it will swell up (i think from heat or etc.) and its kind of hard not to pop it a little because it is located on my butt cheek and it somehow gets a bit of tear whenever i try to sit, after that it would release some puss then after a while it would die down. sorry, english isn't my mother tounge, hope you understand.