Hidradenitis suppurativa



Characterized by painful subcutaneous lumps that can break open or result in tunnels under the skin. The most affected areas are typically those where sweat glands are located and where the skin rubs together (armpits, groin, buttocks, or breasts).

Common Symptoms

Blackheads that are in pairs or a double-barreled pattern, painful lumps the size of peas in the inner thighs, breasts, and buttocks, and tunnels under the skin that may have an odor and leak pus.

Coexisting Diseases and Conditions

Depression, severe acne, acne conglobata, pilonidal cysts, Crohn’s disease, arthritis, and specific cancers including squamous-cell carcinoma, buccal cancer, and hepatocellular cancer.

Risk Factors and Prevalence

Females who are between the ages of 18 and 29, those with a family history of the condition, and those who are obese or smoke tobacco.


  1. Article Sources
    1. NORD (National Organization for Rare Disorders). (2021, May 10). Hidradenitis suppurativa. NORD (National Organization for Rare Disorders). https://rarediseases.org/rare-diseases/hidradenitis-suppurativa/

    2. Mayo Clinic Staff. (2019, May 16). Hidradenitis suppurativa. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/hidradenitis-suppurativa/symptoms-causes/syc-20352306