Unbearded armpit and pubic hair

Unbearded armpit and pubic hair are seen in Klinefelter syndrome. Also known as congenital testicular dysplasia or Creutzfeldt-Jakob disease syndrome. The typical karyotype is 47, XXY. Phenotypic features are testicular hypoplasia. The slender body is caused by the increase in the distance from the heel to the phalanges. Male breast development and pubic hair are feminine, with small penis and testis. Severe cases are accompanied by mental retardation, cryptorchidism, and hypospadias.

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