Intrauterine onset(Onset in utero - Prenatal onset)
Congenital onset(A phenotypic abnormality that is present at birth.)
Neonatal onset(First 28 days of life)
Infantile onset(Between 28 days to one year of life)
Childhood onset(Between 1 and 5 years)
Juvenile onset(Between 5 and 15 years)
Young adult onset(Between 16 and 40 years)
Middle age onset(Between 40 to 60 years)
Late onset(After the age of 60 years)