Hello sir/mam Last Sunday I found a little tumor in my backside and below down to the  head when paining with fever. I went to local doctor he gave me medicine for fever. Now from Monday I am suffering from chickenpox and all thing all good no pain is occur after that time. But today night it's too much paining that I am enable to sleep. The tumor is pained only when it's become heated by fever so I am seat in front of cooler. Please any help me.