Acne

Definition

Acne is a common skin condition characterized by the inflammation of hair follicles and sebaceous glands, often caused by the bacterium Propionibacterium acnes. It manifests as pimples, blackheads, and cysts primarily on the face, neck, chest, and back.

5 Must Know Facts For Your Next Test

1. Propionibacterium acnes is an anaerobic bacterium involved in the pathogenesis of acne.
2. Acne can result from hormonal changes that increase sebum production.
3. Inflammatory responses to P. acnes can lead to the formation of pustules and cysts.
4. Topical treatments can include benzoyl peroxide and antibiotics such as clindamycin.
5. Severe cases of acne may require systemic antibiotics or isotretinoin treatment.

Review Questions

• What role does Propionibacterium acnes play in the development of acne?
• How do hormonal changes contribute to acne formation?
• What are common treatments for severe acne?

Related terms

Sebaceous Glands:

Glands in the skin that produce sebum, an oily substance that lubricates hair and skin.

Pustule: A small inflamed elevation of the skin containing pus.

Isotretinoin: A potent systemic retinoid medication used to treat severe cases of acne.