Fibrous Dysplasia Of Bone →

The condition stems from a in the GNAS gene . This mutation is not inherited from parents but occurs spontaneously during early embryonic development.

The mutation leads to continuous activation of the Gsα protein, increasing cAMP levels. fibrous dysplasia of bone

Affects multiple bones. This form typically presents earlier in childhood and is more severe. The condition stems from a in the GNAS gene

Because the mutation happens after fertilization, only some cells carry it. This results in a patchy, variable distribution of the disease across the body. Clinical Classification Affects multiple bones

A triad of polyostotic FD, café-au-lait skin spots (often with jagged "Coast of Maine" borders), and hyperfunctioning endocrine issues like precocious puberty. Symptoms and Complications

Fibrous dysplasia is categorized by how many bones it affects:

Fibrous dysplasia (FD) is a rare, non-inherited bone disorder where normal bone marrow is replaced by abnormal, fibrous connective tissue. This makes the affected bones weak, prone to fractures, and susceptible to deformities. Pathophysiology and Genetics