Dermatofibromas do not go away by themselves. However, as they are harmless and cause little trouble, no treatment is usually needed apart from an accurate diagnosis and reassurance.
Under a local anesthetic will always leave a scar, which may be as obvious as the original lump. Removal may be worthwhile if:
- The dermatofibroma is unsightly and you are prepared to swap it for a scar.
- It is a nuisance and causing symptoms such as itching or pain – though these symptoms may settle with time. There are any doubts about the diagnosis.
What you can do
Anyone who develops a new lump in their skin, particularly if it is pigmented, should ask their doctor to have a look at it.