What are the newborn pediatric child adolescent and adult age ranges?

Here's a breakdown of the common age ranges used in healthcare:

Newborn: Birth to 28 days old

Infant: 1 month to 1 year old

Toddler: 1 to 3 years old

Preschooler: 3 to 5 years old

School-Aged Child: 5 to 12 years old

Adolescent: 12 to 18 years old

Adult: 18 years and older

Note: These are general guidelines, and some healthcare professionals may use slightly different ranges depending on their specialty or specific needs. For example, a neonatologist might consider a newborn up to 3 months old.

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