<unk>  [FD] is a disorder of bones which may occur with or without endocrinological and skin disorders. It may cause bony pain, deformity, fracture and / or entrapment of nerves, It is basically the acquired mis-sense mutation of gene coding for the α-subunit of the stimulatory G-protein, Gs, in the guanine nucleotide binding, alpha stimulating (GNAS) complex locus in chromosome 20q13. It leads to immature or poor differentiation of body tissue at the time of ossification and replacement of bone by fibrous tissue. Diagnosis depends on radiology and biopsic specimen.
Fibrous dysplasia
Monostotic fibrous dysplasia
Nodular fasciitis
Fibroma
Actinic elastosis
Myositis ossificans
Nonossifying fibroma
Diastrophic dysplasia