Coccyx? Fistula?: A hard not movable lump here may be your coccyx (tailbone), often easily bruised in thin people, worsened by sitting. A mobile tender lump may be a cyst ?(pilonidal) or an anal fistula/abscess, especially with redness and fever. Get checked if it persists.
Answered 5/11/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
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