Differential Diagnosis
DDx Strength: Weak
Posterior neck, Multiple skin lesions Add or remove findings

Differential too broad. Edit Findings to refine your results.

Acne keloidalis nuchae

Acne keloidalis nuchaeAcne keloidalis nuchae

Acanthosis nigricans

Acanthosis nigricansAcanthosis nigricans

Lichen simplex chronicus

Lichen simplex chronicusLichen simplex chronicus

Pseudoxanthoma elasticum

Pseudoxanthoma elasticumPseudoxanthoma elasticum

Cutis rhomboidalis nuchae

Cutis rhomboidalis nuchaeCutis rhomboidalis nuchae

Allergic contact dermatitis

Allergic contact dermatitisAllergic contact dermatitis

Folliculitis

FolliculitisFolliculitis

Furunculosis

FurunculosisFurunculosis

Sarcoidosis

SarcoidosisSarcoidosis

Pediculosis capitis

Pediculosis capitisPediculosis capitis

Drug-induced photoallergic reaction

Drug-induced photoallergic reactionDrug-induced photoallergic reaction

Viral exanthem

Viral exanthemViral exanthem

Actinic keratosis

Actinic keratosisActinic keratosis

Arthropod bite or sting

Arthropod bite or stingArthropod bite or sting

Atopic dermatitis

Atopic dermatitisAtopic dermatitis

Bullous impetigo

Bullous impetigoBullous impetigo

CA-MRSA skin infection

CA-MRSA skin infectionCA-MRSA skin infection

Factitial ulcer

Factitial ulcerFactitial ulcer

Herpes zoster

Herpes zosterHerpes zoster

Irritant contact dermatitis

Irritant contact dermatitisIrritant contact dermatitis

Neurotic excoriations

Neurotic excoriationsNeurotic excoriations

Non-bullous impetigo

Non-bullous impetigoNon-bullous impetigo

Prurigo nodularis

Prurigo nodularisPrurigo nodularis

Psoriasis

PsoriasisPsoriasis

Seborrheic dermatitis

Seborrheic dermatitisSeborrheic dermatitis

Seborrheic keratosis

Seborrheic keratosisSeborrheic keratosis

Solar elastosis (actinic elastosis)

Solar elastosis (actinic elastosis)Solar elastosis (actinic elastosis)

Solar lentigo

Solar lentigoSolar lentigo

Sunburn

SunburnSunburn

Tinea corporis

Tinea corporisTinea corporis

Tinea versicolor

Tinea versicolorTinea versicolor

Urticaria

UrticariaUrticaria

Vitiligo

VitiligoVitiligo

Miliaria rubra

Miliaria rubraMiliaria rubra

Subacute cutaneous lupus erythematosus

Subacute cutaneous lupus erythematosusSubacute cutaneous lupus erythematosus

Discoid lupus erythematosus

Discoid lupus erythematosusDiscoid lupus erythematosus

Drug-induced phototoxic reaction

Drug-induced phototoxic reactionDrug-induced phototoxic reaction

Drug-induced pigmentation

Drug-induced pigmentationDrug-induced pigmentation

Erysipelas

ErysipelasErysipelas

Granuloma annulare

Granuloma annulareGranuloma annulare

Miliaria pustulosa

Miliaria pustulosa

Physical urticaria

Physical urticaria

Phytophotodermatitis

PhytophotodermatitisPhytophotodermatitis

Skin abscess

Skin abscessSkin abscess

Acute generalized exanthematous pustulosis

Acute generalized exanthematous pustulosisAcute generalized exanthematous pustulosis

Acute myelomonocytic leukemia

Acute myelomonocytic leukemiaAcute myelomonocytic leukemia

AIDS-associated Kaposi sarcoma

AIDS-associated Kaposi sarcomaAIDS-associated Kaposi sarcoma

Blastomycosis

BlastomycosisBlastomycosis

Chronic actinic dermatitis

Chronic actinic dermatitisChronic actinic dermatitis

Darier disease

Darier diseaseDarier disease

Demodex folliculitis

Demodex folliculitis

Dermatomyositis

DermatomyositisDermatomyositis

Elastosis perforans serpiginosa

Elastosis perforans serpiginosaElastosis perforans serpiginosa

Erythema annulare centrifugum

Erythema annulare centrifugumErythema annulare centrifugum

IgG4-related disease

IgG4-related disease

Immunosuppression-associated eosinophilic folliculitis

Immunosuppression-associated eosinophilic folliculitisImmunosuppression-associated eosinophilic folliculitis

Neutrophilic eccrine hidradenitis

Neutrophilic eccrine hidradenitisNeutrophilic eccrine hidradenitis

Old World cutaneous leishmaniasis

Old World cutaneous leishmaniasisOld World cutaneous leishmaniasis

Porphyria cutanea tarda

Porphyria cutanea tardaPorphyria cutanea tarda

Primary cutaneous anaplastic large cell lymphoma

Primary cutaneous anaplastic large cell lymphoma