I am at wits end.I have been experiencing a burning sensation in my left buttock cheek when I sit down for 3 months now. I have been to numerous doctors and specialists,had many tests and still no answer to what is causing it. When I sit down,after a short period of time I start feeling a burning sensation in my bum cheek,feels warm to touch but feels like it's on fire.Has anybody experienced this?or does anybody have any advice.