When staphylococcal infection is present, lesions are distributed randomly; they are also increasingly pustular.
Additional considerations in the differential diagnosis for hidradenitis suppurativa include:
Cutaneous Crohn disease (associated with intestinal Crohn disease)
Simple abscesses (usually consist of single lesions)
Primary or secondary neoplasms (systemic and histologic signs of tumor will be present)
Primary cutaneous actinomycosis (concomitant with sinus tract disease presentation)
Scrofuloderma type of cutaneous tuberculosis
Learn more about the diagnosis of hidradenitis suppurativa.
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Cite this: William D. James. Fast Five Quiz: Hidradenitis Suppurativa Presentation and Diagnosis - Medscape - May 12, 2020.