When HS develops in the perianal area, it creates a situation that is physically debilitating and psychologically isolating. Most patients spend years being treated for the wrong condition before someone connects the dots.
What Is Perianal HS?
Perianal HS is hidradenitis suppurativa affecting the skin immediately surrounding the anus. It involves the same underlying process as HS anywhere else on the body: follicular occlusion triggers an immune response that leads to abscess formation, rupture, and chronic inflammation.
What makes the perianal location uniquely challenging is the anatomy. The area is warm, moist, and subject to constant movement and friction. Bacteria from the gut can colonize lesions. And the proximity to the rectum means that sinus tracts can extend in ways that create serious complications.
Men are significantly more likely than women to have perianal HS. Studies suggest that up to 30-40% of men with HS have perianal involvement, compared to a much lower rate in women.
Why This Type Is More Serious
Perianal HS carries a higher risk of complications than HS in other locations. The most significant concern is sinus tract formation.
Sinus tracts are tunnels that form under the skin, connecting multiple lesion sites. In the perianal area, these tracts can:
- Extend toward the rectum, creating fistulas that require surgical repair
- Become chronically infected with gut bacteria
- Cause significant scarring that affects bowel function
- Be mistaken for Crohn's-related perianal fistulas
Warning Signs That Require Urgent Evaluation
- Rectal bleeding or discharge from perianal wounds
- Pain during bowel movements that is getting progressively worse
- A wound near the anus that has been draining for more than 4 weeks
- Fever with perianal swelling (possible abscess requiring drainage)
- A tunnel or tract you can feel under the skin near the anus
The Diagnosis Problem
Most men with perianal HS are first seen by a colorectal surgeon, not a dermatologist. This is understandable, but it creates a diagnostic gap. Colorectal surgeons are trained to look for fistulas, abscesses, and Crohn's disease. HS may not be on their radar.
What to Tell Your Doctor
If you have recurrent perianal abscesses or wounds that keep coming back, ask specifically: "Could this be hidradenitis suppurativa?" Request a referral to a dermatologist who has experience with HS.
Also mention: any history of HS in other body areas (armpits, groin), family history of HS or acne inversa, and whether lesions appear in multiple spots rather than one isolated location.
Treatment Options for Perianal HS
Mild Disease
- Topical clindamycin 1% solution
- Antiseptic washes (Hibiclens)
- Oral doxycycline or tetracycline
- Intralesional corticosteroid injections for acute flares
Moderate Disease
- Combination antibiotics (clindamycin + rifampicin)
- Adalimumab (Humira) or secukinumab (Cosentyx)
- Deroofing of shallow sinus tracts
- Laser hair removal to reduce follicular triggers
Severe Disease
- Wide local excision of affected tissue
- Multidisciplinary care (dermatologist + colorectal surgeon)
- Long-term biologic therapy post-surgery
- Wound care specialist for post-surgical healing
Related Resources
Frequently Asked Questions
This article is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider for diagnosis and treatment of hidradenitis suppurativa.
References
- [1] Jemec GB. Hidradenitis suppurativa. N Engl J Med. 2012;366(2):158-164.
- [2] Alikhan A, et al. North American clinical management guidelines for hidradenitis suppurativa. J Am Acad Dermatol. 2019;81(1):76-90.
- [3] van der Zee HH, et al. Hidradenitis suppurativa: viewpoint on clinical phenotyping, pathogenesis and novel treatments. Exp Dermatol. 2012;21(10):735-739.
- [4] Zouboulis CC, et al. European S1 guideline for the treatment of hidradenitis suppurativa/acne inversa. J Eur Acad Dermatol Venereol. 2015;29(4):619-644.