Boys – Development of external genitalia |
Stage 1: Prepubertal |
Stage 2: Enlargement of testes and scrotum; scrotal skin reddens and changes in texture |
Stage 3: Enlargement of penis (length at first); further growth of testes |
Stage 4: Increased size of penis with growth in breadth and development of glans; testes and scrotum larger, scrotal skin darker |
Stage 5: Adult genitalia |
Girls – Breast development |
Stage 1: Prepubertal |
Stage 2: Breast bud stage with elevation of breast and papilla; enlargement of areola |
Stage 3: Further enlargement of breast and areola; no separation of their contour |
Stage 4: Areola and papilla form a secondary mound above level of breast |
Stage 5: Mature stage: Projection of papilla only, related to recession of areola |
Boys and girls – Pubic hair |
Stage 1: Prepubertal (the pubic area may have vellus hair, similar to that of forearms) |
Stage 2: Sparse growth of long, slightly pigmented hair, straight or curled, at base of penis or along labia |
Stage 3: Darker, coarser, and more curled hair, spreading sparsely over junction of pubes |
Stage 4: Hair adult in type, but covering smaller area than in adult; no spread to medial surface of thighs |
Stage 5: Adult in type and quantity, with horizontal upper border |
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