Prevention & Risk Assessment
What causes pilomatrixoma?
Pilomatrixomas develop from an abnormal formation of cells that are similar to hair cells, which become hardened or calcified. The calcified cells form a mass beneath the skin.
Other members of a child's family may also have pilomatrixoma, suggesting a genetic component.
What are the symptoms of pilomatrixoma?
The following are the most common symptoms of pilomatrixoma. However, each child may experience symptoms differently. Symptoms may include a small, hard mass beneath the skin of the face, head, neck, or arms. The mass is usually less than 3 centimeters in diameter and the skin covering the mass appears normal, or may feel firm or hardened. Usually, the mass is painless, unless it becomes infected.
The symptoms of pilomatrixoma may resemble other neck masses or medical problems. Always consult your child's doctor for a diagnosis.