Definition: The age or period of life at which a disease or the initial symptoms or manifestations of a disease appear in an individual.
IM: GEN only; not for routine age of onset of dis in individual case reports; coord NIM with disease /epidemiol (IM), as "age of onset in peptic ulcer"
Other names Late-Onset Disorder; Late Onset Disorders; Disorders, Late-Onset; Onset Age; Disorder, Late-Onset; Late-Onset Disorders