Body · Pattern guide
Painless swelling or ulcer
A painless swelling, firm patch or ulcer that enlarges. Guidance, not a diagnosis.
Browse concerns Story cardWhat it looks like
Signs
painless swelling or firm patchan ulcer that enlargesoften on an arm, leg or facemay begin without fever
What may help
Options
prompt in-person examinationclinician-directed testing and treatmentprotect an open wound and follow clinical wound-care advice
When to get help
Pause here
Arrange an in-person medical examination promptly. Rapid enlargement, a deep or extensive wound, joint or bone involvement, pus, fever or new pain needs urgent care.
Sources
Checked links.
Reviewed July 2026
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