n.
Inflammation of the apocrine sweat glands of the perianal, axillary, and genital areas, producing chronic abscesses or sinuses.
| Medical Dictionary: hidradenitis sup·pu·ra·ti·va |
Inflammation of the apocrine sweat glands of the perianal, axillary, and genital areas, producing chronic abscesses or sinuses.
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| Wikipedia: Hidradenitis suppurativa |
| Hidradenitis suppurativa | |
| Classification and external resources | |
| ICD-10 | L73.2 |
|---|---|
| ICD-9 | 705.83 |
| DiseasesDB | 5892 |
| eMedicine | emerg/259 med/2717 derm/892 |
| MeSH | D017497 |
Hidradenitis suppurativa or HS is a skin disease that affects areas bearing apocrine sweat glands and hair follicles; such as the underarms, groin and buttocks.[1]:710 It is more commonly found in women and can be present under the breasts.
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The disease manifests as clusters of chronic abscesses or boils, which can be as large as baseballs or as small as a pea, that are extremely painful to the touch and may persist for years with occasional to frequent periods of inflammation, culminating in drainage of pus, often leaving open wounds that will not heal. Drainage provides some relief from severe, often debilitating, pressure pain. Flare-ups may be triggered by stress, perspiration, hormonal changes (such as monthly cycles in women), humid heat, and clothing friction. Persistent lesions may lead to scarring and the formation of sinus tracts, or tunnels connecting the abscesses under the skin. At this stage, complete healing is usually not possible, and progression varies from person to person, with some experiencing remission anywhere from months to years at a time, others may worsen and require surgery in order to live comfortably. Occurrences of bacterial infections and cellulitis (deep tissue inflammation) may occur at these sites. HS pain can be difficult to manage.[2]
HS often goes undiagnosed for years because patients are too ashamed to speak with anyone.[2] When they do see a doctor, the disease is frequently misdiagnosed or prescribed treatments are ineffective, temporary and sometimes even harmful. There is no known cure nor any consistently effective treatment. Carbon dioxide laser surgery is currently considered the last resort for those who have advanced to its highest stage, where the affected areas are excised, and the skin is grafted. Surgery doesn't always alleviate the condition, however, and can be very expensive.
It is possible that there is genetic predisposition to the disease.[3] HS is not contagious, and is not affected nor caused by good or bad hygiene. HS is often called an 'orphan illness', due to little research being conducted on the disease at this time. Because HS is considered a rare disease, its incidence rate is not well known, but has been estimated as being between 1:24 (4.1%) and 1:600 (0.2%).[4]
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.[2]
HS presents itself in three stages.[2][9]
| Stage | Characteristics |
|---|---|
| I | Solitary or multiple isolated abscess formation without scarring or sinus tracts. (A few minor sites with rare inflammation; may be mistaken for acne.) |
| II | Recurrent abscesses, single or multiple widely separated lesions, with sinus tract formation. (Frequent inflammations restrict movement and may require minor surgery such as incision and drainage.) |
| III | Diffuse or broad involvement across a regional area with multiple interconnected sinus tracts and abscesses. (Inflammation of sites to the size of golf balls, or sometimes baseballs; scarring develops, including subcutaneous tracts of infection - see fistula. Obviously, patients at this stage may be unable to function.) |
As this disease is poorly studied, the causes are controversial and experts disagree. However, potential indicators include:
The historical understanding of the disease is that there is a dysfunctional apocrine glands[9] or dysfunctional hair follicles,[11] possibly triggered by a blocked gland, creating inflammation, pain, and a swollen lesion. More recent studies imply there is an autoimmune component.[citation needed]
HS is not caused by any bacterial infection—any infection is secondary—and is therefore not contagious. Most cultures done on HS lesions come back negative for bacteria, so antibiotics should be used only when a bacterial infection has been confirmed by a physician.[citation needed]
Left undiscovered, undiagnosed, or untreated, the fistulas from severe stage-3 HS can lead to the development of squamous cell carcinoma in the anus or other affected areas. [12][13]
Treatments may vary depending upon presentation and severity of the disease. Due to the poorly-studied nature of this disease, the effectiveness of the drugs and therapies listed below is not yet clear, and patients should discuss all options with their doctor or dermatologist. Nearly a quarter of patients state that nothing relieves their symptoms.[14] A list of treatments that are possible treatments for some patients is as follows.
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