General Surgery — Flashcards

Flashcard 531: _____ contact dermatitis presents with a erythematous, dry rash that feels pruritic

Answer: Irritant

Flashcard 532: 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.

Flashcard 533: What is the likely diagnosis in a healthcare worker that presents with itchy, dry skin on the hands for the past month? Examination shows dry and irritated skin with erythema at the fingers, finger webs, and dorsum of the hands (pictured below). _____

Answer: Irritant contact dermatitis

Flashcard 534: What investigation is done for suspected tinea corporis/cruris if uncertain or targeted treatment is needed? _____

Answer: Skin samples for microscopic & fungal culture examination

Flashcard 535: Diagnosis of tinea corporis/cruris is done through thorough clinical _____ & exam

Answer: history

Flashcard 536: Onychomycosis is caused by _____ & yeast (candida)

Answer: dermatophytes

Flashcard 537: 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 538: Spot diagnosis = _____

Answer: irritant allergic dermatitis

Flashcard 539: What is the first-line management for tinea corporis/cruris? _____

Answer: Topical antifungal cream (terbinafine cream)

Flashcard 540: What is the first-line management for onychomycosis if few nails are affected? _____

Answer: Topical antifungal treatment (amorolfine)