Acne

特許 係属中 Acne vulgaris (or simply acne) is a common human skin disease, characterized by areas of seborrhea (scaly red skin), comedones (blackheads and whiteheads), papules (pinheads), nodules (large papules), pimples, and possibly scarring.[1] Aside from scarring, its main effects are psychological, such as reduced self-esteem[2] and in very extreme cases, depression or suicide.[3] One study has estimated the incidence of suicidal ideation in patients with acne as 7.1%.