Imaging studies (ultrasonography of the hair follicles and dermal thickness) may reveal abnormalities in the deep part of the follicles.
Neither biopsy nor laboratory testing are routinely performed for diagnostic purposes when hidradenitis suppurativa is suspected.
Bacteriologic sampling and cultivation can isolate nearly all microorganisms from hidradenitis suppurativa lesions, including streptococci, gram-positive and gram-negative rods, and the full range of fecal bacteria.
Learn more about the workup for patients with hidradenitis suppurativa.
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Cite this: William D. James. Fast Five Quiz: Hidradenitis Suppurativa Presentation and Diagnosis - Medscape - May 12, 2020.