4 doctors weighed in:
What could be a white lump on my penis?
4 doctors weighed in

Dr. Simon Kimm
Urology
3 doctors agree
In brief: Several things,
But the most likely cause is a sebaceous cyst.
These are benign skin lumps filled with keratin and fluid. They can be stable, or enlarge and get inflamed, and sometimes drain on their own. If you have a painful, inflamed, or enlarging lesion on the penis, see your physician for evaluation. Many other benign skin issues also present as whitish lumps.

In brief: Several things,
But the most likely cause is a sebaceous cyst.
These are benign skin lumps filled with keratin and fluid. They can be stable, or enlarge and get inflamed, and sometimes drain on their own. If you have a painful, inflamed, or enlarging lesion on the penis, see your physician for evaluation. Many other benign skin issues also present as whitish lumps.
Dr. Simon Kimm
Dr. Simon Kimm
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