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There is a sexual differentiation in the amount and distribution of androgenic hair, with men tending to have more terminal hair in more areas. This includes facial hair, chest hair, abdominal hair, leg hair, arm hair, and foot hair. (See Table 1 for development of male body hair during puberty.)
The individual occurrence and characteristics of chest hair depend on the genetic disposition, the hormonal status and the age of the person. The genes primarily determine the amount, patterns and thickness of chest hair. Some men are very hairy, while others have no chest hair at all. All ranges and patterns of hair growth are normal.
Disperse (or quadrangular): Hair is distributed broadly over the abdomen without forming a discrete geometric pattern. [2] Richard Zickler performed a 1997 study of photographs of the above patterns and their occurrence in 400 white men and 400 white women, [3] paying particular attention to the development of hair during puberty. In Zickler's ...
Androgenetic alopecia, or male pattern baldness, is a common form of hair loss that can occur in your 20s, 30s, 40s or later in your life Over time, this hair loss may cause your frontal hairline ...
Male pattern baldness (androgenetic alopecia) is a common issue that can happen to men of all ages. It can cause diffuse hair loss across the entire scalp, a receding hairline, a bald patch, or a ...
Hirsutism is excessive body hair on parts of the body where hair is normally absent or minimal. The word is from early 17th century: from Latin hirsutus meaning "hairy". [2] It usually refers to a male pattern of hair growth in a female that may be a sign of a more serious medical condition, [3] especially if it develops well after puberty. [4]
Type of hair loss: Hair loss in men is often due to genetics, according to the American Academy of Dermatology (AAD), including male-pattern hair loss and androgenic alopecia, which causes hair ...
Typical effects of virilization in children are pubic hair, accelerated growth and bone maturation, increased muscle strength, acne, and adult body odor. In males, virilization may signal precocious puberty , while congenital adrenal hyperplasia and androgen producing tumors (usually) of the gonads or adrenals are occasional causes in both sexes.