Flashcards in Dermatology Deck (53)
What are 1st degree burns?
What are 2nd degree burns?
What are 3rd degree burns?
Painless neuropathy (dermis)
What disease have palm and sole rash?
Toxic Shock Syndrome
Rocky mountain spotted fever
Coxsackie A: Hand-Foot-Mouth disease
Staph Scaled Skin
What is Erythema Multiforme?
Target lesions (viral, drugs)
What is Stevens Johnson syndrome?
Erythema Multiforme Major (mouth, eye, vagina)
What is Toxic Epidermal Necrolysis?
Stevens Johnson w/skin sloughing
What is Pemphigus Vulgaris?
Ab against desmosones=> circular immunofluoresence, in epidermis, oral lesions, + Nikolsky sign
What is Bullous Pemphigoid?
Ab against hemidesmosomes => linear immunofluorescence, subepidermal, "floating" keratinocyytes, eosinophils
What is Eczema?
Dry flaky dermatitis in flexor creases "itch that rashes"
What is Nummular dermatitis?
What is Spongiotic eczema?
Weeping eczema: scratching causes oozing "like a sponge"
What is Lichenification?
Scratching => thick leathery skin
What is Pityriasis Rosea?
Herald patch that follows skin lines (Tx: sunlight) "C mass tree pattern"
What is Lichen Planus?
Polygonal pruritic purple papules
What is Scabies?
Linear excoriation "burrows" in webs of fingers, toes, belt line (Sarcoptes feces)
What does UV-A cause?
What does UV-B cause?
Burns and cancer
What are the ABCD's that indicate worse prognosis of skin cancer?
> 4mm Diameter
What does the Clark level tell you?
Invasion of melanoma
What does Breslow's classification tell you?
Depth of melanoma
Where are Malignant Melanomas usually found?
What is the precursor od a Malgnant Melanoma?
What are the types of Malignant Melanomas?
Superficial spreading: most common, flat brown
Nodular: worst prognosis, black, dome shape
Lentigo maligna melanoma: elderly pts, fair-skin
Acral lentigous: AIDS pts, dark skin
Where are Squamous cell carcnomas usually found?
Flat flaky stuff on lower face, keratin pearls
What is the precursor of Squamous Cell carcinoma?
Actinic keratosis (red scaly plaque)
What are the types of Squamous Cell carcinoma?
Bowen's disease: SCC in situ on uncircumcised penis dorsum
Verrucous carcinoma: wart on foot
Where are Basal Cell carcinomas usually found?
Pearly papules on upper face, palisading nuclei, good prognosis
What are the types of Basal Cell carcinomas?
Nodular: waxy nodule w/ central necrosis
Superficial: red scaly plaques,mlike eczema
Pigmented: looks like melanoma
Sclerosing: yellow waxy plaques
What is Acne Rosacea?
Blush all the time, worse w/ stress/ alcohol
What is a Brown Recluse Spider Bite?
Painful black necrotic lesion
What is Cellulitis?
Warm red leg
What is a Cutaneous Anthrax?
Painless black necrotic lesion
What is a Decubitus Ulcer?
What is a DVT?
Blood clot in veins, associated w/ hypercoagulable state
What is Erysipelas?
Shiny red, raised, does not blanch, usually on face, associated w/Strep pyogenes
What is Icthyosis?
Gradual lizard skin
What is Miliaria?
"Heat rash": burning, itching papules on trunk
What is Molluscum Contagiosum?
Fleshy papules w/ central dimple, pox virus (STD)
What is Psoriasis?
Silver scales on extensors, nail pitting, differentiated too fast, worse w/ stress
- Auspitz sign: remove scale => pinpoint bleeding
- Koebner's phenomenon: lesions at sites of skin trauma
What is a pyogenic granuloma?
Vascular nodule at site of previous injury
What is a Seborrheic Dermatitis?
Dandruff in eyebrows, nose, behind ears
What is Seborrheic Keratosis?
Rubbery warts with aging, greasy
What is Thrombophlebitis?
Vein inflammation w/ thrombus
What is Vitiligo?
White patches, anti melanocyte Ab
What is Xeroderma Pigmentosa?
Bad DNA repair
What is Erythema Chronic Migrans?
Lyme disease (solitary lesion that spreads)
Whatbis Erythema Infectiosum?
Fifth disease "slaped cheeks" due to Parvovirus B19
What is Erythema Marginatum?
Rheumatic fever (red margins)
What is Erythema Multiforme?
Target lesions due to HSV, Phenytoin, Barbs, Sulfas
What is Erythema Multiforme Major?
Stevens Johnson syndrome (>1 mucosal surface)
What is Erythema Nodosum?
Fat inflammation (painful red nodules on legs), sarcoidosis