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

Sunburn

SunburnSunburn

Drug-induced photosensitive reaction

Drug-induced photosensitive reactionDrug-induced photosensitive reaction

Drug-induced phototoxic reaction

Drug-induced phototoxic reactionDrug-induced phototoxic reaction

Phytophotodermatitis

PhytophotodermatitisPhytophotodermatitis

Polymorphous light eruption

Polymorphous light eruptionPolymorphous light eruption

Drug-induced photoallergic reaction

Drug-induced photoallergic reactionDrug-induced photoallergic reaction

Solar urticaria

Solar urticariaSolar urticaria

Ephelides

EphelidesEphelides

Solar elastosis (actinic elastosis)

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

Solar lentigo

Solar lentigoSolar lentigo

Actinic keratosis

Actinic keratosisActinic keratosis

Poikiloderma of Civatte

Poikiloderma of CivattePoikiloderma of Civatte

Solar purpura

Solar purpuraSolar purpura

Amiodarone drug-induced pigmentation

Amiodarone drug-induced pigmentationAmiodarone drug-induced pigmentation

Pseudoporphyria

PseudoporphyriaPseudoporphyria

Systemic lupus erythematosus

Systemic lupus erythematosusSystemic lupus erythematosus

Anti-TNF-alpha-induced eruptions

Anti-TNF-alpha-induced eruptions

Chronic actinic dermatitis

Chronic actinic dermatitisChronic actinic dermatitis

Disseminated superficial actinic porokeratosis

Disseminated superficial actinic porokeratosisDisseminated superficial actinic porokeratosis

Porphyria cutanea tarda

Porphyria cutanea tardaPorphyria cutanea tarda

Protoporphyria

ProtoporphyriaProtoporphyria

Tumid lupus erythematosus

Tumid lupus erythematosusTumid lupus erythematosus

Variegate porphyria

Variegate porphyriaVariegate porphyria

Addison disease

Addison diseaseAddison disease

Dermatomyositis

DermatomyositisDermatomyositis

Argyria

ArgyriaArgyria

Bromoderma

BromodermaBromoderma

Rothmund-Thomson syndrome

Rothmund-Thomson syndromeRothmund-Thomson syndrome

Congenital erythropoietic porphyria

Congenital erythropoietic porphyriaCongenital erythropoietic porphyria

Hydroa vacciniforme

Hydroa vacciniformeHydroa vacciniforme

Melasma

MelasmaMelasma

Discoid lupus erythematosus

Discoid lupus erythematosusDiscoid lupus erythematosus

Subacute cutaneous lupus erythematosus

Subacute cutaneous lupus erythematosusSubacute cutaneous lupus erythematosus

Drug-induced lupus erythematosus

Drug-induced lupus erythematosusDrug-induced lupus erythematosus

Drug-induced pigmentation

Drug-induced pigmentationDrug-induced pigmentation

Physical urticaria

Physical urticaria

Pellagra

PellagraPellagra

Acute graft-versus-host disease

Acute graft-versus-host diseaseAcute graft-versus-host disease

Colloid milium

Colloid miliumColloid milium

Drug-induced hypopigmentation

Drug-induced hypopigmentationDrug-induced hypopigmentation

Actinic granuloma

Actinic granulomaActinic granuloma

Hemochromatosis

HemochromatosisHemochromatosis

Lichen planus pigmentosus

Lichen planus pigmentosus

Warty dyskeratoma

Warty dyskeratomaWarty dyskeratoma

Epidermodysplasia verruciformis

Epidermodysplasia verruciformisEpidermodysplasia verruciformis

Hepatoerythropoietic porphyria

Hepatoerythropoietic porphyria

Multicentric reticulohistiocytosis

Multicentric reticulohistiocytosisMulticentric reticulohistiocytosis

Whipple disease

Whipple disease

Familial white lentiginosis

Familial white lentiginosis

POIKTMP

POIKTMP

Lichenoid drug eruption

Lichenoid drug eruptionLichenoid drug eruption

Nodular basal cell carcinoma

Nodular basal cell carcinomaNodular basal cell carcinoma

Pigmented basal cell carcinoma

Pigmented basal cell carcinomaPigmented basal cell carcinoma

Infiltrating basal cell carcinoma

Infiltrating basal cell carcinomaInfiltrating basal cell carcinoma

Superficial basal cell carcinoma

Superficial basal cell carcinomaSuperficial basal cell carcinoma

Hereditary coproporphyria

Hereditary coproporphyriaHereditary coproporphyria

Fabry disease

Fabry diseaseFabry disease

Cutaneous squamous cell carcinoma

Cutaneous squamous cell carcinomaCutaneous squamous cell carcinoma

Merkel cell carcinoma

Merkel cell carcinomaMerkel cell carcinoma

Pilomatrix carcinoma of skin

Pilomatrix carcinoma of skin