General Surgery — Flashcards

Flashcard 521: What is the first-line management of pityriasis versicolor? _____

Answer: Topical antifungals: • Terbinafine, clotrimazole, or miconazole cream ketaconazole 2%, selenium sulphide shampoos (leave for 15 minutes then wash)

Flashcard 522: What investigation is done for suspected tinea pedis if uncertain or targeted treatment is needed? _____

Answer: Skin samples for microscopic & fungal culture examination

Flashcard 523: _____ degradation produces acid that damages melanocytes in pityriasis versicolor (results in hypo/hyperpigmentation)

Answer: Lipid

Flashcard 524: Spot diagnosis = _____

Answer: onychomycosis

Flashcard 525: What is the first-line management for tinea corporis/cruris? _____

Answer: Topical antifungal cream (terbinafine cream)

Flashcard 526: Pityriasis versicolor is most commonly seen in _____ **bonus, why?

Answer: teenagers/young adults

Extra: Pityriasis versicolor is most common in these age groups due to increased **sebum production**, as *Malassezia* is a lipophilic fungus.

Flashcard 527: Tinea corporis is spread through _____

Answer: skin-to-skin contact

Flashcard 528: Dermatophytes thrive in warm, _____ environments (e.g. locker rooms, public pools, hyperhidrosis)

Answer: humid

Flashcard 529: _____ is a chronic skin condition affecting the pilosebaceous unit leading to non-inflammatory comedones and/or inflammatory acne

Answer: Acne vulgaris

Extra: Acne vulgaris primarily affects areas with high densities of sebaceous glands (face, upper back, and chest).

Flashcard 530: Tinea cruris (jock itch) commonly develops via autoinoculation from _____ (athlete's foot).

Answer: tinea pedis

Extra: Tinea cruris (jock itch) involves the groin, upper thighs, and pubic area. It often occurs due to the spread of dermatophytes from elsewhere on the patient's own body, most commonly from the feet (tinea pedis) or nails (tinea unguium). Patients should be advised to put their socks on before their underwear to prevent spread.