Snapshot A 5-year-old boy is referred to the pediatric endocrinology clinic by his pediatrician due to concerns about pubic hair growth. The parents report that he began showing signs of pubic hair growth over the past 3 months, and his height has accelerated markedly in the past half year. At the current visit, his height is at the 99th percentile for height and 98th percentile for weight. Physical examination shows that he has developed pubic hair and has a testicular length of 2.8 cm. A radiograph of his left hand and wrist is obtained and reveals that his bone age is 10 years. Introduction Overview login to view 1 more bullet Epidemiology Incidence login to view 1 more bullet Demographics login to view 1 more bullet ETIOLOGY Pathophysiology login to view 13 more bullets Presentation History login to view 9 more bullets Physical exam login to view 9 more bullets Imaging Radiography of the hand and wrist login to view 3 more bullets Head MRI login to view 1 more bullet Studies Sex steroid levels login to view 15 more bullets LH and FSH levels after GnRH stimulation login to view 4 more bullets Differential Premature pubarche login to view 2 more bullets Treatment Medical login to view 5 more bullets Surgical login to view 3 more bullets Prognosis Majority of girls who experience precocious puberty at ages 6-8 years will achieve an average adult height without treatment login to view 1 more bullet