In 1956, Pillsbury postulated follicular occlusion as the cause of acne inversa, which they grouped together with acne conglobata and perifolliculitis capitis abscendens et suffodiens ("dissecting cellulitis of the scalp") as the "acne triad". Plewig and Kligman added another element to their acne triad, pilonidal sinus. Plewig et al. noted that this new "acne tetrad" includes all the elements found in the original "acne triad", in addition to a fourth element, pilonidal sinus. In 1989, Plewig and Steger introduced the term "acne inversa", indicating a follicular source of the disease and replacing older terms such as "Verneuil disease". Other names
Hidradenitis suppurativa has been referred to by multiple names in the literature, as well as in various cultures. Some of these are also used to describe different diseases, or specific instances of this disease. Acne conglobata – not really a synonym – this is a similar process, but in classic acne areas of chest and back
Acne inversa – a proposed new term which has not gained widespread favor.
Laser hair removal
The 1064-nm wavelength laser for hair removal may aid in the treatment of HS. A randomized control study has shown improvement in HS lesions with the use of an Nd:YAG laser. Prognosis
In stage III disease, as classified by the Hurleys staging system, fistulae left undiscovered, undiagnosed, or untreated, can rarely lead to the development of squamous cell carcinoma in the anus or other affected areas. Other stage III chronic sequelae may also include anemia, multilocalized infections, amyloidosis, and arthropathy. Stage III complications have been known to lead to sepsis, but clinical data are still uncertain. Potential complications
Contractures and reduced mobility of the lower limbs and axillae due to fibrosis and scarring occur. Severe lymphedema may develop in the lower limbs. Local and systemic infections (meningitis, bronchitis, pneumonia, etc. ), are seen, which may even progress to sepsis. Interstitial keratitis
Anal, rectal, or urethral fistulae
Normochromic or hypochromic anemia
People with HS may be at increased risk for autoimmune disorders including ankylosing spondylitis, rheumatoid arthritis, and psoriatic arthritis. Squamous cell carcinoma has been found on rare occasions in chronic hidradenitis suppurativa of the anogenital region. The mean time to the onset of this type of lesion is 10 years or more and the tumors are usually highly aggressive. Tumors of the lung and oral cavity, and liver cancer
Hypoproteinemia and amyloidosis, which can lead to kidney failure and death
Seronegative and usually asymmetric arthropathy: pauciarticular arthritis, polyarthritis/polyarthralgia syndrome

History
From 1833 to 1839, in a series of three publications, Velpeau identified and described a disease now known as hidradenitis suppurativa.