Fibrous dysplasia is a bone disease that destroys and replaces normal bone with fibrous bone tissue. One or more bones can be affected.

Fibrous dysplasia occurs in childhood, usually between ages 3 - 15. The condition does not run in families (not hereditary) and the cause is unknown.

• Bone lesions
• Bone pain
• Difficulty walking
• Endocrine gland abnormalities
• Fractures or bone deformities (rare)
• Unusual skin color (pigmentation)

The bone lesions may stop when the child reaches puberty.

The doctor will perform a physical examination. X-rays of bones are taken.