Final answer:
Acne vulgaris leads to various lesion types including whiteheads, blackheads, papules, pustules, nodules, and cysts, caused by infection with Propionibacterium acnes. Treatments range from topical agents to medications like isotretinoin and therapies like laser therapy, depending on the severity of the acne.
Step-by-step explanation:
Types of Lesions in Acne Vulgaris
Acne vulgaris, a common skin disorder, leads to the formation of different types of lesions on areas rich in sebaceous glands like the face and back. The initial non-inflammatory lesions, known as comedones, can be either whiteheads, which are closed plugs of sebum and dead skin cells covered by skin, or blackheads, which are similar plugs exposed to air causing oxidation and a dark appearance. Inflammatory lesions can occur when these comedones become infected by bacteria such as Propionibacterium acnes. This can result in papules and pustules, which are small raised bumps that may contain pus, as well as more severe forms such as nodules and cysts, which are large, painful, deep-seated lumps beneath the surface of the skin. These lesions can lead to redness and even scarring.
The severity and treatment of acne vulgaris vary. Mild cases might only require topical treatments like salicylic acid or retinoids, while moderate and severe cases could warrant antibiotics, acne creams, or stronger medications such as isotretinoin, along with therapies like phototherapy and laser therapy.