What causes precocious puberty?

Central Precocious Puberty
This type of early puberty, also known as gonadotropin-dependent precocious puberty, occurs when the abnormality is located in the brain. The brain signals the pituitary gland to begin puberty at an early age. Central precocious puberty is the most common form of precocious puberty and affects many more girls than boys. The causes of central precocious puberty include:

• Brain tumors
• Prior radiation to the brain
• Prior infection of the brain
• Other brain abnormalities