Precocious puberty is early onset of hormones and sexual characteristics in girls before the age of 8 and in boys before the age of 9. It is important to note that children of some ethnic backgrounds may go through puberty sooner and a medical diagnosis should be made (Mayo Clinic, 2025)
Most children with this disorder have bone growth older than their chronological age and go through a growth spurt early which may result in initially being taller than peers at a young age. However, individuals with precocious puberty often stop growing before reaching their full genetic height potential. There are many potential causes of precocious puberty which an endocrinologist may investigate by doing lab work, a bone age x-ray of the hand, and/or an MRI of the pituitary gland. Causes may include tumors or growths of the ovaries, adrenal glands, pituitary gland, or brain, or central nervous system abnormalities, family history, or certain rare genetic syndromes. However, in most cases, no cause can be found for the disorder (CHOP, 2025).
Advanced bone age can impact a child physically as well as psychologically. Growing faster than peers can make children taller initially and stand out from peers but then they stop growing sooner and may be shorter than peers later. In addition to an early growth spurt, children with precocious puberty may start developing breast buds, pubic and body hair, and body odor. Sometimes young girls have started menstruating and need support for managing this in early elementary school. Due to “mature” physical appearance adults may perceive children with precocious puberty as older and expect the child to be meeting cognitive and emotional developmental stages that the child is not yet. Experiencing these hormones early can impact not only physical development but also emotional development. Experiencing hormones can be a difficult time for pre-teens and adolescents and may be even more difficult for young children with mood swings and increased agitation. Caregivers initially may not know what is happening with their child. Even after a diagnosis, children may have a hard time understanding what is happening to their bodies as they are growing sooner than caregivers, doctors, and children may have expected. Children with precocious puberty may become self-conscious of these changes.