These bumps rarely cause symptoms. However, it is always important to see a doctor about any new skin growth.
Usually reddish-brown in color
- Darker for individuals with darker skin
- Color may change over time
- Found most often on the legs, but may also appear on the arms or trunk of the body
- Small in size (3-10 millimeters)
- Very firm to touch
- Occasionally itchy or sensitive when touched
- Raised from the skin and may bleed if damaged (For example, if you shave over a dermatofibroma, it can bleed)
Your doctor will ask about your symptoms and medical history. A physical exam will be done.
A dermatofibroma is diagnosed by sight and touch. Your doctor may also squeeze the skin over the bump. When squeezed together, a dimple will form.
If there is doubt, the bump can be surgically removed. The removed tissue is then examined more thoroughly under a microscope.