Masculinized Finger Length Patterns in Human Males and Females with Congenital Adrenal Hyperplasia

  title={Masculinized Finger Length Patterns in Human Males and Females with Congenital Adrenal Hyperplasia},
  author={Windy M. Brown and Melissa Hines and Briony A. Fane and Stephen M. Breedlove},
  journal={Hormones and Behavior},
The ratio of the length of the second digit (2D) to the length of the fourth digit (4D) is greater in women than in men. Since androgens are involved in most somatic sex differences and since the sexual dimorphism in 2D:4D is stable from 2 years of age in humans, it was hypothesized that finger length pattern development might be affected by early androgen exposure. Human females with congenital adrenal hyperplasia (CAH) are exposed prenatally to higher than normal levels of adrenal androgens… 

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