Differential Diagnosis
DDx Strength: Weak
Upper back, Multiple skin lesions Add or remove findings

Differential too broad. Edit Findings to refine your results.

Pityriasis rosea

Pityriasis roseaPityriasis rosea

Folliculitis

FolliculitisFolliculitis

Viral exanthem

Viral exanthemViral exanthem

Actinic keratosis

Actinic keratosisActinic keratosis

Cherry hemangioma

Cherry hemangiomaCherry hemangioma

Ephelides

EphelidesEphelides

Guttate psoriasis

Guttate psoriasisGuttate psoriasis

Herpes zoster

Herpes zosterHerpes zoster

Nummular dermatitis

Nummular dermatitisNummular dermatitis

Seborrheic keratosis

Seborrheic keratosisSeborrheic keratosis

Solar lentigo

Solar lentigoSolar lentigo

Tinea corporis

Tinea corporisTinea corporis

Tinea versicolor

Tinea versicolorTinea versicolor

Urticaria

UrticariaUrticaria

Subacute cutaneous lupus erythematosus

Subacute cutaneous lupus erythematosusSubacute cutaneous lupus erythematosus

Acne vulgaris

Acne vulgarisAcne vulgaris

Drug-induced flagellate pigmentation

Drug-induced flagellate pigmentationDrug-induced flagellate pigmentation

Miliaria rubra

Miliaria rubraMiliaria rubra

Notalgia paresthetica

Notalgia parestheticaNotalgia paresthetica

Pityrosporum folliculitis

Pityrosporum folliculitisPityrosporum folliculitis

Transient acantholytic dermatosis

Transient acantholytic dermatosisTransient acantholytic dermatosis

Drug-induced phototoxic reaction

Drug-induced phototoxic reactionDrug-induced phototoxic reaction

Polymorphous light eruption

Polymorphous light eruptionPolymorphous light eruption

Macular amyloidosis

Macular amyloidosisMacular amyloidosis

Scleredema

ScleredemaScleredema

Dermatomyositis

DermatomyositisDermatomyositis

Shiitake dermatitis

Shiitake dermatitis

Allergic contact dermatitis

Allergic contact dermatitisAllergic contact dermatitis

Arthropod bite or sting

Arthropod bite or stingArthropod bite or sting

Atopic dermatitis

Atopic dermatitisAtopic dermatitis

CA-MRSA skin infection

CA-MRSA skin infectionCA-MRSA skin infection

Café au lait spot

Café au lait spotCafé au lait spot

Dermographism

DermographismDermographism

Furunculosis

FurunculosisFurunculosis

Idiopathic guttate hypomelanosis

Idiopathic guttate hypomelanosisIdiopathic guttate hypomelanosis

Milia

MiliaMilia

Pityriasis alba

Pityriasis albaPityriasis alba

Postinflammatory hyperpigmentation

Postinflammatory hyperpigmentationPostinflammatory hyperpigmentation

Prurigo nodularis

Prurigo nodularisPrurigo nodularis

Psoriasis

PsoriasisPsoriasis

Striae

StriaeStriae

Sunburn

SunburnSunburn

Vitiligo

VitiligoVitiligo

Acne excoriée

Acne excoriée

Angiokeratoma

Angiokeratoma

Bedbug bite

Bedbug biteBedbug bite

Cholinergic urticaria

Cholinergic urticariaCholinergic urticaria

Cultural practices

Cultural practicesCultural practices

Drug-induced pigmentation

Drug-induced pigmentationDrug-induced pigmentation

Keratinocytic epidermal nevus

Keratinocytic epidermal nevusKeratinocytic epidermal nevus

Lichen sclerosus

Lichen sclerosusLichen sclerosus

Miliaria crystallina

Miliaria crystallinaMiliaria crystallina

Neurofibromatosis

NeurofibromatosisNeurofibromatosis

Non-Hodgkin lymphoma

Non-Hodgkin lymphomaNon-Hodgkin lymphoma

Physical urticaria

Physical urticaria

Phytophotodermatitis

PhytophotodermatitisPhytophotodermatitis

Postinflammatory hypopigmentation

Postinflammatory hypopigmentationPostinflammatory hypopigmentation

Sarcoidosis

SarcoidosisSarcoidosis

Skin abscess

Skin abscessSkin abscess

Spider bite

Spider biteSpider bite