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Differential Diagnosis of Hidradenitis Suppurativa
| Early Lesions | Late Lesions |
|---|---|
| Acne | Actinomycosis |
| Carbuncles | Anal fistula |
| Cellulitis | Cat scratch disease |
| Cutanous blastomycosis | Crohn disease |
| Dermoid cyst | Granuloma inguinale |
| Erysipelas | Ishciorectal abscess |
| Furuncles | Lymphogranuloma venereum |
| Inflamed epidermoid cysts | Nocardia infection |
| Lymphadenopathy | Noduloulcerative syphilis |
| Perirectal abscess | Pilonidal disease |
| Pilonidal cyst | Tuberculous abscess |
| Tularemia |
