Dermatology Quiz Flashcards
What is the difference between a blister and a bulla?
Bullae are blisters that are greater than 1cm in diameter
What is the most common allergen found in watches?
Nickel - metal back watch
What skin disease is characterised by a raised, purple edge with an ulcerated centre?
Pyoderma Gangrenosum
What is the most severe, sudden onset acne?
Acne Fulminans
What disease causes symmetrical hypopigmentation?
Vitiligo
Which type of melanoma is almost always found on the cheek?
Lentigo maligna melanoma
- name given to superficial spreading melanoma found on the cheek
Briefly describe the appearance of a squamous cell carcinoma.
Inflammatory
Keratosis - crusty, white
Sun induced site
List the layers of the skin in order. Superficial to deep.
Stratum corneum (Stratum lucidum) Stratum granulosum Stratum spinosum Stratum basale
How much of an excision should be made for a skin cancer of less than 1mm Breslow thickness?
Excise 1cm
What condition is characterised by small, symmetrical, red disks of scaling plaques?
Guttate psoriasis
Briefly describe a nodular basal cell carcinoma.
Telangiectasia
Rasied
Shiny
Well demarcated, bumpy edge
Which type of hair loss appears as non-scarring,circular areas of hair loss?
Alopecia areata
What condition has ulceration of the medial malleolus, varicose veins, superficial changes and venous dermatitis?
Venous leg ulcer
What condition is a young fit, non sun damaged person likely to have with the following skin change?
- well demarcated bulge in thumb
- pink colour
- short history
Pyogenic granuloma
Describe the appearance of necrolytic migratory erythema.
Red patches with irregular borders
Intact and ruptured vesicles and crust formation
Dry
Fissured
Commonly affects limbs and skin around the lips
