Dermatology pics Flashcards

penicillin-induced exanthematous skin reaction

Purpuric vasculitic drug reaction (non-blanching)

Acneiform drug reaction (no blacheads or comedomes, just pustules)

Fixed drug eruption

Acute generalised exanthematous pustulosis

Toxic epidermal necrolysis (TEN)

Drug-induced lupus

Stretch marks (side effect of topical steroids)

Thinning of skin + purpura (side effect of topical steroids)

Steroid rosacea

Telangectasia (steroids)

Herpes simplex cold sore

Herpez zoster (shingles)

Eczema herpeticum

Napkin dermatitis (nappy rash) with candida

Tinea corporis (ringworm)

Pityriasis versicolor (often mistaken for vitiligo - its is SCALY)

Normal skin

psoriasis

Prickle cell layer

Granular layer

Lamellar body

Wart

Melanosomes

L = lagerhans
K = keratinocyte

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DEJ

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Psoriasis vulgaris on dark skin

Guttate psoriasis

Palmoplantar pustular psoriasis

Erythrodermic psoriasis

Psoriatic nail disease

Rhinophyma as a result of rosacea

Wickham’s striae (lichen planus)

White strings in buccal mucosa + nail ridges as a result of lichen planus

Bullous pemphigoid

Pemphigus vulgaris

Impetigo (staph aureus)

Scalded skin syndrome

Erysipela (GAS)

Necrotising fasciitis (may not look severe but patient wil be in extreme pain)

Tinea capitis

Tinea manuum

Tinea corporis

Tinea cruris

Tinea unguum

Tinea pedis

Scabies

Lichen planus
* Saw-toothed epithelium
* Lymphocytic infiltrate

Pemphigus vulgaris
*Intact dermis + basal layer

Bullous pemphigoid (epidermis completely detached from dermis)

Dermatitis herpetiformis

Dermatitis herpetiformis - papillary dermal microabscesses

Demodex mite in sebaceous duct (rosacea)

Eczema on POC (has papular appearance)

Keloid scarring due to eczema in POC

Discoid eczema (well-defined unlike typical eczema)

Stasis eczema

Stasis eczema

Seborrhoeic dermatitis

Pompholyx eczema

Lichen simplex

Periungal fibromata + longitudinal ridging (signs of tuberous sclerosis)

Ash leaf macule (sign of tuberous sclerosis)

Angiofibromas (sign of tuberous sclerosis - often mistaken for acne)

Shagreen patch (sign of tuberous sclerosis)

Enamel pitting (sign of tuberous sclerosis)

Cafe au lait macules (>5 can suggest neurofibromatosis)

Neurofribromatosis (cafe au lait macules + neurofibromas)

Lisch nodules (associated with NF1)

Melanoma

Melanoma

Basal cell carcinoma

Squamous cell carcinoma

Nodular BCC

Rodent ulcer -BCC

Superficial BCC (can look like patch of dermatitis)

Morphoeic (infiltrative) BCC

Pigmented BCC

Actinic keratoses (precancerous skin lesions)

Bowen’s disease (carcinoma in situ) - erythematous plaque

congenital melanocytic naevus

giant congenital naevus

Junctional naevus (nests of melanocytes attached to epidermis)

Intradermal naevus

Dysplastic naevus - melanocytes look mostly normal but structural atypia is present + lots of lymphocytes

Halo naevus

Blue naevus

Blue naevus - pigment rich spindle cells

Spitz naevus - pink coloration due to prominent vasculature

Spitz naevus - note epidermal hyperplasia

Superficial spreading melanoma

Acral melanoma on heel

Subungal acral melanoma

Lentigo maligna melanoma

Melanoma in situ (only found in epidermis - has not spread to dermis)

Superficial spreading melanoma (invasive as it has spread to dermis)

Nodular melanoma

Satellite deposits of melanoma in skin

Seborrhoeic keratosis - note horn cysts

Lipodermatosclerosis - as a result of venous hypertension

Venous dermatitis

Venous ulcer

Arterial ulcer

BCC (shallow, non-healing, sharp ulcer)

Nodular BCC (note telangectasia)

Nodular BCC

Nodular BCC - note peripheral palisading

Superifical BCC

Superficial BCC (sprouting from epidermis)

Infiltrative BCC - note rodent ulcer

Infiltrative BCC

Infiltrative BCC - cords of tumour cells instead of nodules

Bowen’s disease (atypia is above basement membrane) - grossly atypical cells, large nuclei, dyskeratosis

Actinic keratosis

Actinic keratosis

Actinic keratosis - note parakeratosis (nuclei in keratin layer)

Erythroplasia of Queryat - penile bowens

Invasive SCC - see the squamous looking cells invading the dermis?

Perineural spread of SCC (see squamous cells following nerve in dermis) - poor prognosis

Dermatofibroma

dermatofibrosarcoma protruberans

Angioma

Angiosarcoma-note diffuse nature of disease

Angiosarcoma - look at all the vessels formed by the tumour

Merkel cell carcinoma

Merkel cell carcinoma