Derm Flashcards
Urticarial Vasculitis how to Dx?
Dx: skin biopsy
Vignette: joint pains and low grade fever painful wheals that last more than 24hours and leave bruises SLE? AI?
Urticarial Vasculitis
AI blistering disease older people urticarial plaques to blisters mucosal 10-40% Peripheral Eosinophilia subepidermal = tense bullae Abs to Collagen XVII 2 biopsies lesion and perilesion normal skin
Bullous Pemphigoid
80% acquired Liver disease: ETOH, Hemochromatosis, decreased hepatic Scarring numerous milia uroporphyrinogen decarboxylase
Porphyria Cutanea Tarda
melanonychia w/concern for malignancy how to Dx?
nail matrix biopsy
Rapid fire assoc: Keratin pearls on a skin biopsy
Squamous cell carcinoma
What is the inheritance pattern for Hereditary Hemorrhagic Telangiectasia(HHT)?
Autosomal dominant. HHT is also known as Osler-Weber-Randau syndrome
Rapid fire assoc:Anti-desmoglein (anti-desmosome) antibodies
Pemphigus vulgaris (blistering)
Pruritic, purple, polygonal planar papules and plaques (6 P’s)
Lichen planus
Palpable purpura on buttocks/legs, joint pain, abdominal pain (child), hematuria
Henoch-Schönlein purpura (IgA vasculitis affecting skin and kidneys)
Fibrous plaques in soft tissue of penis with abnormal curvature
Peyronie disease (connective tissue disorder)
Which disease is associated with decreased uroporphyrinogen decarboxylase activity?
Porphyria cutanea tarda
What is the rash that is commonly associated with celiac disease?
Dermatitis herpetiformis
Which extra-intestinal manifestations can mirror inflammatory bowel disease?
Arthritis and Erythema Nodosum
Elastic skin, hypermobility of joints, ↑ bleeding tendency
Ehlers-Danlos syndrome (type V collagen defect, type III collagen defect seen in vascular subtype of ED)