<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a sore maybe a pimple or boil type thing right below my tailbone. It hurts to touch and at times sitting can be uncomfortable. Is it a cyst? Is it possible to treat this with something over the counter? I have good hygiene but do sweat a lot.  <response>: HI, thanks for using Chat Doctor It is possible it is a cyst a sac that may collect fluid, it can become infected. It may also be an abscess which is a localized collection of pus. It would be best to be reviewed by your doctor. The lesion may need to be incised and, if infected, antibiotics given. If it is a cyst then it would be best to have the sac removed, or it will recollect. I hope this helps 