Differential Diagnosis
DDx Strength: Weak
Posterior aspect of ear, Multiple skin lesions Add or remove findings

Allergic contact dermatitis

Allergic contact dermatitisAllergic contact dermatitis

Seborrheic dermatitis

Seborrheic dermatitisSeborrheic dermatitis

Psoriasis

PsoriasisPsoriasis

Polymorphous light eruption

Polymorphous light eruptionPolymorphous light eruption

Angiolymphoid hyperplasia with eosinophilia

Angiolymphoid hyperplasia with eosinophiliaAngiolymphoid hyperplasia with eosinophilia

Actinic keratosis

Actinic keratosisActinic keratosis

Furunculosis

FurunculosisFurunculosis

Irritant contact dermatitis

Irritant contact dermatitisIrritant contact dermatitis

Keratoacanthoma

KeratoacanthomaKeratoacanthoma

Non-bullous impetigo

Non-bullous impetigoNon-bullous impetigo

Cutaneous squamous cell carcinoma

Cutaneous squamous cell carcinomaCutaneous squamous cell carcinoma

Epidermoid cyst

Epidermoid cystEpidermoid cyst

Black dermographism

Black dermographism

AIDS-associated Kaposi sarcoma

AIDS-associated Kaposi sarcomaAIDS-associated Kaposi sarcoma

Papular mucinosis

Papular mucinosisPapular mucinosis

Cutaneous granuloma fissuratum

Cutaneous granuloma fissuratumCutaneous granuloma fissuratum

Amicrobial pustulosis of the folds

Amicrobial pustulosis of the folds

Café au lait spot

Café au lait spotCafé au lait spot

Common wart

Common wartCommon wart

Physical urticaria

Physical urticaria

Rheumatoid nodule

Rheumatoid noduleRheumatoid nodule

Spitz nevus

Spitz nevusSpitz nevus

Tinea faciei

Tinea facieiTinea faciei

Nodular basal cell carcinoma

Nodular basal cell carcinomaNodular basal cell carcinoma

Squamous cell carcinoma in situ

Squamous cell carcinoma in situSquamous cell carcinoma in situ

Chilblains

ChilblainsChilblains

Cocaine levamisole toxicity

Cocaine levamisole toxicityCocaine levamisole toxicity

Primary cutaneous anaplastic large cell lymphoma

Primary cutaneous anaplastic large cell lymphoma

Trichodysplasia spinulosa

Trichodysplasia spinulosa

Arthropod bite or sting

Arthropod bite or stingArthropod bite or sting

Gout

GoutGout

Postinflammatory hyperpigmentation

Postinflammatory hyperpigmentationPostinflammatory hyperpigmentation

Seborrheic keratosis

Seborrheic keratosisSeborrheic keratosis

Telangiectasia

TelangiectasiaTelangiectasia

Angiokeratoma

Angiokeratoma

Postinflammatory hypopigmentation

Postinflammatory hypopigmentationPostinflammatory hypopigmentation

Skin abscess

Skin abscessSkin abscess

Relapsing polychondritis

Relapsing polychondritisRelapsing polychondritis

Atypical nevus

Atypical nevusAtypical nevus

Blue nevus

Blue nevusBlue nevus

Common acquired nevus

Common acquired nevusCommon acquired nevus

Keloid

KeloidKeloid

Lentigo maligna

Lentigo malignaLentigo maligna

Melanoma

MelanomaMelanoma

Nevus sebaceus

Nevus sebaceusNevus sebaceus

Congenital melanocytic nevus

Congenital melanocytic nevusCongenital melanocytic nevus

Superficial basal cell carcinoma

Superficial basal cell carcinomaSuperficial basal cell carcinoma

Nodular fasciitis

Nodular fasciitis

Raynaud phenomenon

Raynaud phenomenonRaynaud phenomenon

Acne vulgaris

Acne vulgarisAcne vulgaris

Kaposiform hemangioendothelioma

Kaposiform hemangioendothelioma

Acrochordon

AcrochordonAcrochordon

Foreign body granuloma

Foreign body granulomaForeign body granuloma

Lipoma

LipomaLipoma

Halo nevus

Halo nevusHalo nevus

Branchio-oto-renal syndrome

Branchio-oto-renal syndrome

Pseudocyst of auricle

Pseudocyst of auriclePseudocyst of auricle