NIC Esthetician Written ExamScientific ConceptsMedium
A client is undergoing a series of treatments to address severe acne. The esthetician understands that acne is a multifactorial condition involving several key elements. Which of the following is considered the primary bacterial contributor to acne vulgaris?
- APropionibacterium acnes (Cutibacterium acnes)
- BEscherichia coli
- CStreptococcus pyogenes
- DStaphylococcus aureus
Show answer & explanationAnswer & explanation
Correct answer: A. Propionibacterium acnes (Cutibacterium acnes)
Propionibacterium acnes, now officially reclassified as Cutibacterium acnes, is the anaerobic bacterium that thrives in oxygen-deprived clogged pores and plays a crucial role in the inflammation and pustule formation characteristic of acne vulgaris.
Why the other options are wrong
- B. Escherichia coli (E. coli) is primarily a gut bacterium and is not a significant contributor to acne vulgaris.
- C. Streptococcus pyogenes is known for causing strep throat and certain skin infections (e.g., cellulitis), but not acne vulgaris.
- D. Staphylococcus aureus is commonly associated with skin infections like impetigo or folliculitis, but not the primary cause of acne vulgaris.
Cutibacterium acnes (formerly Propionibacterium acnes)
An anaerobic bacterium that resides in hair follicles and sebaceous glands, playing a key role in the development of acne vulgaris by metabolizing sebum and triggering inflammation.
- Primary bacterial cause of acne vulgaris
- Anaerobic, thrives in oxygen-poor environments
- Feeds on sebum, producing fatty acids that irritate follicles
- Contributes to inflammation and lesion formation
Memory trick: Acne's main bacteria: C. acnes, a Clogged pore's Culprit.