What is the Tanner stage for a girl who has breast bud development?

The Tanner stages, also known as the Tanner scale or sexual maturity rating, are used to assess the development of secondary sexual characteristics during puberty. For girls, Tanner stage 2 is characterized specifically by breast bud development.

At this stage, there is a notable physical change where small lumps underneath the nipple, known as breast buds, begin to form. This is typically the first sign of puberty in females and marks the beginning of breast development. It usually occurs between the ages of 8 and 13, although the exact timing can vary widely among individuals.

In contrast, Tanner stage 1 indicates a prepubertal state where there are no signs of breast development. Stages 3 and 4 involve further development of breast tissue, with increased volume and elevation of the breasts, and are characterized by more mature breast form than what is seen in stage 2. Understanding this progression helps in recognizing typical patterns of growth and development during puberty.