pimple , ingrown hair..i dont know what it is!!!

I have a pimpke thingy on my butt check.. its all white tho. my bf popped it for me and there were 3 pore wholes which came out puss and lots of what hairs.. im so scared it didnt hurt very much but alot of puss and white hairs came out.. its been there for almost a yr untill i said fine pop it..its a bit sore after popping it but i cant see it so idk if its swollen or coming back bigger!!!

[Bhupinder Kaur, MD]

Hello,
The painless lump that you are having seems like a sebaceous cyst. A sebaceous cyst is a closed sac occurring just under the skin which contains a "pasty" or "cheesy" looking substance called keratin. They may occur anywhere on body but scalp, ears, back, face, and upper arm, are common sites for sebaceous cysts. Blocked sebaceous glands, swollen hair follicles and excessive testosterone production will cause such cysts.

Generally no treatment is required but they become painful then it means they are infected,Then surgical excision by traditional wide excision, minimal excision, and punch biopsy excision may be required.