Flashcards in Dermatology Deck (262)
What is a vesicle?
Fluid-filled blister less than 0.5 cm in diameter
What is a bulla?
Fluid-filled blister more than 0.5 cm in diameter
What is a skin fissure?
Deep crack/crevice into skin
What is a macule?
Flat pigmented lesion less than 1 cm in diameter
What is a patch?
Flat pigmented lesion more than 1 cm in diamter
What is a papule?
Raised lesion less than 0.5 cm in diameter
What is a nodule?
Raised lesion more than 0.5 cm in diameter
What is a pustule?
What is a plaque?
Raised lesion more than 1 cm in diameter
What is lichenification?
What is purpura?
Purple pigmentation that does not blanche
What is petechiae?
1-2 mm of purpura
What is erythema?
Red pigmentation that does blanche
What is an erosion?
Superficial break in epidermis
What is an ulcer?
Deep break in epidermis and dermis
What is a wheal?
Compressible dermal swelling
List skin manifestations of diabetes
What is necrobiosis lipoidica?
Waxy, shiny red-brown plaques with atrophic yellow lesions on shins
What is acanthosis nigricans?
Velvety thickening of skin, usually in the axillae
What is the main skin manifestation of Coeliac disease?
List skin manifestations of inflammatory bowel disease
What is erythema nodosum?
Tender, ill-defined nodules usually found on shins
What is pyoderma gangrenosum?
Recurring nodulo-pustular ulcers that have a red-blue necrotic edge
List skin manifestations of systemic lupus erythematosus
What is the main skin manifestation of herpes simplex infection?
List skin manifestations of vasculitis
Purpura (may be palpable)
What is livedo reticularis?
Mottled red-blue lesions that don't blanche
Usually triggered in the cold
List skin manifestations of dermatomyositis
Scaly red plaques over neck (V-sign)
List aetiology/risk factors for atopic dermatitis
Genetic mutation in filaggrin gene
Overactive TH2 cells results in more circulating IL-4, IL-5, IgE
Infection (Staph aureus)
Exacerbators (dust, temperature, allergies)