Final answer:
Acne comes in two types: acne simplex and acne vulgaris (option C). Acne vulgaris is the more severe form of acne, characterized by clogged hair follicles leading to inflammation and potential scarring. Treatment varies based on severity, ranging from topical agents to prescription medications.
Step-by-step explanation:
Acne can be found in two types: acne simplex and acne vulgaris. Commonly, acne vulgaris is known simply as acne. This skin condition occurs when hair follicles become clogged with sebum and dead skin cells. Factors contributing to acne include hormonal changes, which can increase sebum production, and bacterial infections from Propionibacterium and Staphylococcus, leading to inflammation and potentially to scarring. Different severities range from the less severe, commonly called acne simplex or mild acne, to more problematic forms, such as acne vulgaris, which can be more inflammatory and lead to nodules or cysts.
Other skin conditions that are sometimes confused with acne include rosacea, which is more vascular related and manifests as redness on the face, and asteatosis, which involves dry, scaly skin. Treatment depends on the severity and includes topical agents like salicylic acid or retinoids for mild cases, and in more severe cases, antibiotics, benzoyl peroxide cream, or isotretinoin may be necessary.