Derm Flashcards
1st Degree Burns
Red - Epidermis
2nd Degree Burns
Blisters - Hypodermis
3rd Degree Burns
Painless Neuropathy - Dermis
Diseases with palm and sole rashes
TSSRMSFCocksackie A (hand-foot-mouth disease)KawasakiScarlet FeverStaph - Scalded Skin SyndromeSyphilis
Erythema Multiforme
Target lesions d/t HSV, Phenytoin, Barbituates, Sulfas
Stevens Johnson Syndrome
Erythema Multiforme Major(Mouth, Eye, Vagina - >1 mucosal surface)
Toxic Epidermal Necrolysis
Stevens Johnson with skin sloughing
Pemphigus Vulgaris
Ab against desmosomesCircular immunofluorescence In epidermisOral lesionsNikolsky sign
Bullous Pemphigoid
Ab against hemidesmosomesLinear immunofluorescenceSubepidermal”Floating” keratinocytesEosinophils
Eczema
Dry, flaky dermatitis in flexor creases
Nummular Dermatitis
Circular eczema
Sponglotic Eczema
Weeping eczema - scratching causes oozing
Lichenification
Scratching –> thick, leathery skin
Pityriasis Rosea
Herald patch that follows skin lines”Christmas tree pattern”TX = sunlight
Lichen Planus
Polygonal pruritic purple papules
Scabies
Linear excoriation “burrows” in webs of fingers, toes, belt line (sarcoptes feces)
UV-A causes
Aging
UV-B causes
Burns and cancer
ABCD prognosis of skin cancer
Asymmetric irregular BorderColor differences>4mm Diameter
Clark Level
Invasion of melanoma
Breslow’s Classification
Depth of melanoma
Location of Malignant Melanomas
Men = backFemales = leg
Precursor of Malignant Melanoma
Hutchison’s freckle
Types of Malignant Melanoma
Superficial spreading - MC, flat, brownNodular - worst prognosis, black, dome shapedLentigo malignant melanoma - elderly, fair skinAcral lentigous - AIDS, dark skin
Location of Squamous Cell Carcinoma
Flat, flaky stuff on lower faceKeratin pearls
Precursor of Squamous Cell Carcinoma
Actinic keratosis (red scaly plaque)
Types of Squamous Cell Carcinoma
Bowen’s disease (SCC in situ on uncircumsized penis)Verrucous carcinoma (wart on foot)
Location of Basal Cell Carcinoma
Pearly papules on upper facePalisading nuclei Good prognosis
Types of Basal Cell Carcinoma
Nodular (waxy nodule with central necrosis)Superficial (red scaly plaques - like eczema)Pigmented (looks like melanoma)Sclerosing (yellow waxy plaques)
Acne Rosacea
Blush all the timeWorse with stress and alcohol
Brown Recluse Spider bite
Painful black necrotic lesion
Cellulitis
Warm, red leg
Cutaneous Anthrax
Painless black necrotic lesion
Decubitus Ulcer
Bedsore
DVT
Blood clot in veinsAssociated with hypercoagulable state
Erysipelas
Shiny redRaisedDoesn’t blanchUsually on faceAssociated with S. pyogenes
Ichthyosis
Gradual lizard skin
Miliaria
Heat rashBurning, itching papules on trunk
Molluscum Contagiosum
Fleshy papules with central dimplePox virus (STD)
Psoriasis
Silver scales on extensorsNail pittingDifferentiated too fastWorse with stressAuspitz sign (remove scale - pinpoint bleeding)Koebner’s phenomenon - lesions at sites of skin trauma
Pyogenic Granuloma
Vascular nodules at site of previous injury
Seborrheic Dermatitis
Dandruff in eyebrows, nose, behind ears
Seborrheic Keratosis
Rubbery warts with aging Greasy
Thrombophlebitis
Vein inflammation with thrombus
Vitiligo
White patchesAnti-melanocyte Ab
Xeroderma Pigmentosa
Bad DNA repair
Erythema Chromica Migrans
Lyme disease (solitary lesion that spreads)
Erythema Infectiosum
5th diseaseSlapped cheeksd/t Parvovirus B19
Erythema Marginatum
Rheumatic fever (red margins)
Erythema Nodosum
Fat inflammation (painful red nodules on legs)Sarcoidosis
Erythema Toxicum
Newborn benign rashLooks like flea bites with eosinophils