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Female Tanner Stage
Aka: Female Tanner Stage, Female Sexual Development, Female Tanner Staging, Tanner Girls Pubic Hair, Tanner Girls Breast Development Stage
- See Also
- Sexual Development
- Male Tanner Stage
- Pubertal Delay
- Precocious Puberty
- Amenorrhea
- Delayed Growth
- Stage: Tanner 1 (Prepubertal)
- Height increases at basal rate: 5-6 cm/year
- Breast
- Papilla elevation only
- Pubic Hair
- Villus hair only
- No coarse, pigmented hair
- Stage: Tanner 2
- Height increases at accelerated rate: 7-8 cm/year
- Breast (Thelarche)
- Onset of secondary Breast development (marks the start of Puberty)
- Breast buds palpable and areolae enlarge
- Age 10.9 years (8.9-12.9 years, typically 10.2 to 11.3 years)
- Precedes Menarche by 24 months
- Pubic Hair (Pubarche)
- Minimal coarse, pigmented hair mainly on labia
- Age 11.2 years (9.0-13.4 years)
- Modifications based on increasingly earlier Puberty
- White: Stage 2 changes may appear one year earlier
- Black: Stage 2 changes may appear two years earlier
- Stage: Tanner 3
- Height increases at peak rate: 8 cm/year (age 12.5)
- Breast
- Elevation of Breast contour; areolae enlarge
- Age 11.9 years (9.9-13.9 years)
- Pubic Hair
- Dark, coarse, curly hair spreads over mons pubis
- Age 11.9 years (9.6-14.1 years)
- Other changes (Adrenarche)
- Axillary hair develops (13.1 years)
- Acne Vulgaris develops (13.2 years)
- Body odor
- Stage: Tanner 4
- Height increases at 7 cm/year
- Breast
- Areolae forms secondary mound on the Breast
- Age: 12.9 years (10.5-15.3 years)
- Pubic Hair
- Hair of adult quality
- No spread to junction of medial thigh with perineum
- Age: 12.6 years (10.4-14.8 years)
- Stage: Tanner 5
- No further height increases after age 16 years
- Breast
- Adult Breast contour
- Areola recesses to general contour of Breast
- Pubic hair
- Adult distribution of hair
- Pubic hair spreads to medial thigh
- Pubic hair does not extend up linea alba
- Exam: Other Milestones
- Adrenarche: Age 6 to 8 years
- Menarche: Age 12.7 years (10.8-14.5 years)
- Delayed >1 year if low body fat (e.g. athlete)
- Exam: Growth in Girls
- Peak height velocity: 11.5 years (9.7-13.3 years)
- Peak growth: 8.3 cm/year
- Occurs during Tanner Stage 2 to 3 in girls
- Basal growth occurs up until Tanner Stage 2
- Basal Growth rate: 5.0 to 6.0 cm per year from age 4 years to Puberty (similar to boys)
- Pubertal Linear Growth (typically completed by age 15 years in girls)
- Girls who mature average time: 8.3 (6.1-10.4) cm/yr
- Girls who mature early: 9.0 (7.0-11.0) cm/yr
- Girls who mature late: 7.5 (5.4-9.6) cm/yr
- References
- Tanner (1966) Growth at Adolescence, Appleton
- Klein (2017) Am Fam Physician 96(9): 590-99 [PubMed]
- Tanner (1985) J Pediatr 107(3):317 [PubMed]