Hidradenitis suppurativa has an affinity for intertriginous regions and occurs predominately in the axillae and inguinoperineal regions.
Other areas of the body that contain terminal hair follicles and apocrine sweat glands may also be affected. These include the areola, submammary fold, periumbilical region, scalp, zygomatic and malar areas of the face, nape of the neck, external auditory meatus, and shoulders.
Patients with mild disease may only have involvement in one region, whereas those with more severe disease may have involvement in more than one major site.
Learn more about the clinical manifestations of hidradenitis suppurativa.
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Cite this: William D. James. Fast Five Quiz: Hidradenitis Suppurativa Presentation and Diagnosis - Medscape - May 12, 2020.