Body · Pattern guide
Painless swelling or ulcer
A painless swelling, firm patch or ulcer that enlarges. Guidance, not a diagnosis.
Browse concernsWhat 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.
Links checked 2026-07-22
Sources.
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