A deformity, dysmorphism, or dysmorphic feature is a major abnormality in the shape of a body part or organ compared to the normal shape of that part.
Causes
Deformity may arise from numerous causes:
Genetic mutation
Damage to the fetus or uterus
Complications at birth
A growth or hormone disorder
Reconstructive surgery following a severe injury, e.g. burn injury
Arthritis and other rheumatoid disorders
Fractured bones left to heal without being properly set (malunion)
Chronic application of external forces, e.g. artificial cranial deformation
Chronic paresis, paralysis or muscle imbalance, especially in children, e.g. due to poliomyelitis or cerebral palsy