What causes a cellular dermatofibroma?

What causes a cellular dermatofibroma?

About 1 in 5 people who have a dermatofibroma have had an injury or wound where the tumor forms. Sometimes, a dermatofibroma develops spontaneously, for no known reason.

People with conditions that affect their immune system may have multiple dermatofibromas in a cluster. You’re more likely to have a dermatofibroma cluster if you have:

• HIV/AIDS.
• Leukemia.
• Lupus.