General Surgery — Flashcards

Flashcard 531: Describe the pathogenesis of acne vulgaris: 1. _____ 2. ↑ sebum production 3. Cutibacterium (formerly Propionibacterium) acnes proliferation within follicle 4. Inflammation **helps understand the management

Answer: Pilosebaceous follicle hyperkeratinisation (clogging of the follicle)

Flashcard 532: What is the investigation for onychomycosis? _____

Answer: Nail clippings for fungal microscopy & culture

Flashcard 533: _____ contact dermatitis presents with a erythematous, dry rash that feels pruritic

Answer: Irritant

Flashcard 534: 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 535: How do tinea corporis & tinea cruris annular patches differ? _____

Answer: Characteristic scaly border seen in tinea corporis may be less visible due to the moist skin

Flashcard 536: Spot diagnosis: Hypopigmented or hyperpigmented macules with fine scaling = _____

Answer: pityriasis versicolor

Extra: Pityriasis versicolor is caused by Malassezia furfur. Under KOH mount, it shows a characteristic "spaghetti and meatballs" appearance (hyphae and spores).

Flashcard 537: Tinea _____ = fungal infection of the body Tinea cruris = fungal infection of the groin

Answer: corporis

Flashcard 538: As many as _____% of adolescents experience acne

Answer: 95

Flashcard 539: 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 540: A fungal infection occurring between the toes, characterized by maceration and scaling, is most likely _____.

Answer: tinea pedis (interdigital subtype)