Photos
Differential Diagnosis
DDx Strength:
Weak
Rash or multiple lesions, Canada
Poison ivy - oak - sumac dermatitis


Rocky Mountain spotted fever


Arsenical keratosis


Blastomycosis


Caterpillar dermatitis


Colorado tick fever


Cysticercosis


Fire ant sting


Granuloma inguinale


Histoplasmosis


Streptobacillus moniliformis rat-bite fever


West Nile virus


Anisakiasis

Echinococcosis


Hemorrhagic fever with renal syndrome

Trench fever

Tularemia


Lyme disease


Viral exanthem


Pityriasis rosea


Polymorphous light eruption


Acanthosis nigricans


Acne keloidalis nuchae


Actinic cheilitis


Actinic keratosis


Alcohol use disorder


Allergic contact dermatitis


Anaphylaxis

Angular cheilitis


Anterolateral leg alopecia

Aphthous stomatitis


Arthropod bite or sting


Ashy skin xerosis


Atopic dermatitis


Blepharitis


Bullous impetigo


Bumblebee sting


Bursitis


CA-MRSA skin infection


Café au lait spot


Candidiasis


Cellulitis


Cheilitis


Cherry hemangioma


Common wart


Cutaneous breast cancer


Cutis rhomboidalis nuchae


Dermatosis papulosa nigra


Dermographism


Diabetic dermopathy


Dyshidrotic dermatitis


Eczema craquelé


Ephelides


Erythrasma


Exanthematous drug eruption


Factitial ulcer


Female pattern alopecia


Flat wart


Flea bite


Folliculitis

