Becker's nevus

Becker's nevus (also known as "Becker's melanosis," "Becker's pigmentary hamartoma," "Nevoid melanosis," and "Pigmented hairy epidermal nevus") is a skin disorder predominantly affecting males. The nevus generally first appears as an irregular pigmentation (melanosis or hyperpigmentation) on the torso or upper arm (though other areas of the body can be affected), and gradually enlarges irregularly, becoming thickened and often hairy (hypertrichosis). The nevus is due to an overgrowth of the epidermis, pigment cells (melanocytes), and hair follicles. This form of nevus was first documented in 1948 by American dermatologist Samuel William Becker (1894–1964).

单词	Congenital hairy naevus
释义	Congenital hairy naevus 英语百科 Becker's nevus Becker's nevus (also known as "Becker's melanosis," "Becker's pigmentary hamartoma," "Nevoid melanosis," and "Pigmented hairy epidermal nevus") is a skin disorder predominantly affecting males. The nevus generally first appears as an irregular pigmentation (melanosis or hyperpigmentation) on the torso or upper arm (though other areas of the body can be affected), and gradually enlarges irregularly, becoming thickened and often hairy (hypertrichosis). The nevus is due to an overgrowth of the epidermis, pigment cells (melanocytes), and hair follicles. This form of nevus was first documented in 1948 by American dermatologist Samuel William Becker (1894–1964).
随便看	effective generation time effective genus effective germination percent effective g factor effective gold standard effective government effective gradient effective grain diameter effectivegrain size effective grain size effective grasp area effective gravity effective green time effective ground effective grounded effective grounded line effective grounding effective ground pressure effective group effective group id effective growing season effective guarantee effective gun bore line effective gust velocity effective g value

Congenital hairy naevus

Becker's nevus