Abnormality

Abnormality refers to any deviation from the normal, the noun form of the adjective abnormal.

Abnormality may refer to:

Medicine and physiology

 * Chromosome abnormality, atypical number of chromosomes or a structural abnormality in one or more chromosomes
 * Congenital abnormality, condition which is present at the time of birth which varies from the standard presentation
 * Craniofacial abnormality, congenital musculoskeletal disorders which primarily affect the cranium and facial bones
 * Tooth abnormality, congenital tooth disease
 * Jaw abnormality, disorder in the formation or shape of the jaw
 * Musculoskeletal abnormality, disorder of the musculoskeletal system present at birth
 * Intraretinal microvascular abnormalities
 * Gait abnormality, deviation from normal walking (gait)
 * Multiple abnormalities, used to describe congenital abnormality that can not be primarily identified with a single system of the body or single disease process

Psychology

 * Abnormality (behavior), behavior deviating from the normal or typical
 * Models of abnormality, general hypotheses as to the nature of psychological abnormalities