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Slacker’s Guide to Skin Lesions
What are theseType of lesion: Type of lesion:
Type of lesion: Type of lesion:
What are these
<- Café au lait
Mongolian spot ->
<- Lentigo
Ephelid ->
Type of lesion: Macular/patch Type of lesion: Macular/patch
Type of lesion: Macule Type of lesion: Macule
Differentials
<- Café au lait
Mongolian spot ->
Present at birth or early childhoodDoes not fade with ageLight brown in huePresent anywhere
Present at birthFades with ageBluish in hueLimited to sacral lumbar area
Type of lesion: Macular/patch Type of lesion: Macular/patch
Differentials
<- Lentigo
Ephelid ->
Related to sun exposureTypically seen in older individuals
Seen in young individualsLightens and darkens with sun exposure
Type of lesion: Macule Type of lesion: Macule
What are these
<- Café au lait
Ephelid ->
LargeDoes not fade with ageStable coloration. Surroundingskin may change color
SmallFades with age?Lightens and darkens with season
Type of lesion: Macular/patch
Type of lesion: Macule
What are theseType of lesion: Type of lesion:
Type of lesion:Type of lesion:
What are theseType of lesion: Slight papule
<- Junctional Nevus
Compound Nevus->
<- Intradermal Nevi
Sebhorreic Keratosis ->
Type of lesion: Macule
Type of lesion: papule Type of lesion: papule
Differentials
<- Intradermal Nevi
Sebhorreic Keratosis ->
Type of lesion: papule Type of lesion: papule
??Not velvetyMelanocyte nests in dermis
Keratotic psuedocystsVelvety texture
What are theseType of lesion:Type of lesion:
Type of lesion: Type of lesion:
What are theseType of lesion: Macule
<- Junctional Nevus
Dysplastic Nevus->
<- Halo Nevus
Dermatofibroma->
Type of lesion: Macule
Type of lesion: Macule Type of lesion: macule or papule
Differentials
<- Halo Nevus
Dermatofibroma->
Type of lesion: Macule Type of lesion: macule or papule
Dimples when pinchedUsually on legsCentral white patch
Outer white ring
DifferentialsType of lesion: Macule
<- Junctional Nevus
Dysplastic Nevus->
Type of lesion: Macule
Irregular border and colorNests of melanocytes stream horizontally
Usually regular color and edgesMelanocyte nests at dermal epidermal junction
What are theseType of lesion:Type of lesion:
Type of lesion: Type of lesion:
What are theseType of lesion: Papule
<- Kerattoacantthoma
Angioma: Pyogenic Granluoma ->
<- Epidermoid Cyst
Pilar Cyst->
Type of lesion: Papule
Type of lesion: Papule Type of lesion: Papule
DifferentialsType of lesion: Papule
<- Kerattoacantthoma
Angioma: Pyogenic Granluoma ->
Type of lesion: Papule
Keratin center that looks like a dormant volcano
Red vascular center that looksLike an active volcano.
Differentials
<- Epidermoid Cyst
Pilar Cyst->
Type of lesion: Papule Type of lesion: Papule
Present on “hairless” areas Usually involves hairy areas
What are theseType of lesion:Type of lesion:
Type of lesion: Type of lesion:
What are theseType of lesion: Papule
<- Sebaceous Hyperplasia
Syringoma ->
<- Adenoma Sebaceum
Verruca Plana ->
Type of lesion: Papule
Type of lesion: Papule Type of lesion: Papule
DifferentialsType of lesion: Papule
<- Sebaceous Hyperplasia
Syringoma ->
Type of lesion: Papule
Forehead of menSebaceous glands
Below eye of womenEccrine glands
Differentials
<- Adenoma Sebaceum
Verruca Plana ->
Type of lesion: Papule Type of lesion: Papule
Flat warts.Central facial papules
What are theseType of lesion: Type of lesion:
Type of lesion: Type of lesion:
What are theseType of lesion: Papule?
<- Blue Nevus
Venous Lake ->
<- Fibroepithelial polyps
Stucco Keratosis->
Type of lesion: Papule
Type of lesion: Papule Type of lesion: Papule
What are theseType of lesion: Papule?
<- Blue Nevus
Venous Lake ->
Type of lesion: Papule
Mole with deeper melaninResulting in a blue color
Collection of venous bloodBlanches when pressed
Differentials
<- Fibroepithelial polyps
Stucco Keratosis->
Type of lesion: Papule Type of lesion: Papule
Small Seborrheic KeratosisSmall mole like structures but Less well attached?
What are theseType of lesion: Type of lesion:
Type of lesion: Type of lesion:
What are theseType of lesion: macule? Type of lesion: Macule/patch
Type of lesion: Type of lesion:
<-Angioma:Telangiectasia
Angioma :Spider->
What are theseType of lesion:Type of lesion:
Type of lesion: Type of lesion:
What are theseType of lesion: Papule?
<- Pustular Psoriasis
Erythema Multiforme ->
<- Gutate psoriasis
Herpes Zoster ->
Type of lesion: Papule
Type of lesion: Papule Type of lesion: Papule
Differentials
<- Pustular Psoriasis
Erythema Multiforme ->
Targetoid lesionsDiffuse
Differentials
<- Gutate psoriasis
Herpes Zoster ->
ItchyPainfulFollows dematome
What are these
<- Varicella (Chicken Pox)
Lichen Planus ->
<- Urticaria
Mobiliform->
Differentials
<- Varicella (Chicken Pox)
Lichen Planus ->
Dew drop on rose patternItchyWidespreadCaused by Varicella
Pruritic, purple, polygonal,polymorphous papulesWrists, oral whitishreticulation
Differentials
<- Urticaria
Mobiliform->
AngioedemaTransientRapid changesCan be localized or diffuse
Resembles measlesErythematous papules coalsescing intoplaques
What are these
What are these
<- Bullous Pemphigoid
Pemphigus Vulgaris ->
<- Psoriasis
Seborrheic Dermatitis->
Differentials
<- Bullous Pemphigoid
Pemphigus Vulgaris ->
Tense blisters Flaccid blisters
Differentials
<- Psoriasis
Seborrheic Dermatitis->
Erythematous plaques with silveryscaleEspecially on elbows and kneesPitting of nails common
In sebaceous areas
What are these
<- Dyshidrotic Eczema
Molluscum Contagiosum ->
<- Impetigo
Atopic Dermatitis->
Differentials
<- Dyshidrotic Eczema
Molluscum Contagiosum ->
Itchy Small blisters on hands and feetNon contagious
Small fleshy pearlescent papulesCaused by pox virusContagious – std in adults
Differentials
<- Impetigo
Atopic Dermatitis->
Honey coloredStaph or strep infection
Aggravated by allergens in environment