Which condition results in premature graying of hair due to genetic factors?

The condition that results in premature graying of hair due to genetic factors is canities. This term specifically refers to the gradual loss of pigment in hair follicles leading to gray or white hair. Canities is often influenced by hereditary factors, meaning if family members experienced early graying, it is likely to occur in others as well.

In contrast, hypopigmentation refers more generally to a reduction in pigment in the skin or hair, which does not specifically connote early graying or a hereditary aspect. Vitiligo is a condition characterized by the loss of skin color in patches and does not typically affect hair pigmentation in a way that leads directly to premature graying. Melanoma, a type of skin cancer, involves abnormal growth of pigment-producing cells and is unrelated to hair graying. Thus, canities stands out as the specific condition associated with the genetic influence on premature hair graying.