Beauvais was of an amorous disposition and had had syphilis twice.

His mother and both sisters had good heads of hair, but his father presented the same defects as Beauvais.
Instances are on record of women devoid of hair about the genital region.

Riolan says that he examined the body of a female libertine who was totally hairless from the umbilical region down.
Congenital alopecia is seen in animals.

There is a species of dog, a native of China but now bred in Mexico and in the United States, which is distinguished for its congenital alopecia.

The same fact has been observed occasionally in horses, cattle, and dogs.