Skin Flashcards
What do you see here? What is it associated with?
Reticulated erythema and hyperpigmentation (this photo does not show scaling or telangiectasia)
Erythema ab igne- occurs due to prolonged thermal radiation exposure to the skin. Associated with chronic pain. Also laptop use (on thighs), heated car seats and occupation (jewelers, chefs)
What do you see here? What is it associated with?
Multiple neurofibromas on the back- benign nerve sheath tumours of the peripheral nervous system
What do you see here? What is it associated with?
Symmetrical erythematous rash with excoriation marks affecting the popliteal fossae (flexor surfaces)
Atopic eczema- commonly affects flexor surfaces including the popliteal fossa, antecubital fossa, neck and face
What do you see here? What is it associated with?
Scaly plaques, some with silvery appearance affecting extensor surfaces and onycholysis of the nails.
Psoriasis: Most commonly affects extensor surfaces- elbows, knees, as well as the scalp and sacrum. Nails- look for onycholysis and pitting.
What do you see here? What is it associated with?
Pink rash affecting the nasolabial skin folds
Seborrheic dermatitis- inflammatory reaction to normal a skin flora yeast. Affects forehead, nasolabial folds and scalp. Dandruff is an uninflamed form affecting the scalp.
What do you see here? What is it associated with?
Shiny growth with a smooth surface. It has a central depression creating the appearance of rolled edges.
Basal cell carcinoma. May also have telangiectasia and pearly papules
What do you see here? What is it associated with?
Discrete scaly plaques affecting the majority of the back of a patient.
Guttate psoriasis- usually a couple of days post infection (strep throat) in children and young adults. Lesions mostly affect trunk, arms and thighs.
What do you see here? What is it associated with?
Large oval pink plaque with a scale trailing just inside the edge of the lesion on the patients abdomen.
Surrounding smaller spherical scaly patches.
Pityriasis Rosea- large ovoid patch = herald patch. Associated with (URT) viral illness (though some may not recall). Herald patch usually appears 5-20 days before the generalised rash. May be itchy
What do you see here? What is it associated with?
Areas of hypopigmentation varying in size and shape.
Pityriasis (tinea) versicolor: NB patches may be of varying colors (see other images)- coppory brown, pink or paler than surrounding skin. Due to fungal infection. Diagnosed by looking under wood lamp: shows yellow-green fluorescence. More common in hot, humid climates and may resolve over winter then recur in summer.
What do you see here? What is it associated with?
Itchy red raised wheals of varying size and shape.
Urticaria- usually clear within 24 hours
What do you see here? What is it associated with?
Wrist lesions- shiny, flat-topped papules.
Lichen planus: Autoimmune condition. Has cutaneous and oral forms. Plaques are firm on palpation, often crossed by white striae (Wickham’s striae). May be scaly. Wrist lesions are suggestive, though distribution may be anywhere. Once plaques resolves they leave macules.
What do you see here? What is it associated with?
Brown patches over the anterior aspect of both legs, worse on the left than the right. Grossly ovoid shaped, they have an area of possible ulceration in the centre.
Necrobiosis lipoidica- associated with IDDM and RA. Affects the shins. Rare. Centre becomes shiny, pale and thinned with telangiectasia. a
What do you see here? What is it associated with?
Red lumps affecting the shins- discrete, ciruclar, not well defined.
Erythema nodosum: F>M in adults. Associated with recent infections (throat), sarcoid and IBD. Is an inflammatory disorder affecting subcutaneous fat.
What do you see here? What is it associated with?
Rash in dermatomal distribution of the abdomen- shingles. Some vesicles still visible, remainder appear to be popped blisters and macules.
What do you see here? What is it associated with?
Ulcerating poorly defined growth on the nose with white coating
Squamous cell carcinoma- painful, on sun exposed areas. Actinic keratosis is a risk factor. May ulcerate
What do you see here? What is it associated with?
Group of discrete lesions on extensor aspect of right knee- evidence of erosion and crusting from scratching over some.
Dermatitis herpetiformis- associated with Coeliac disease. M>F, caucasians more commonly. Symmetrical distribution, very itchy, appear in groups, may be vesicles. Skin biopsy, gliadin and EMA antibodies for diagnosis. Resolves with gluten free diet in most. Rare.
What is this?
Keratoacanthoma
Related to SCC, emerges on sun exposed skin from hair follicles.
Usually removed surgically as it is difficult to distinguish from other more serious skin cancers.
