Abstract
Background Acne inversa (AI; also designated as Hidradenitis suppurativa) is a common chronic inflammatory skin disease, localized in the axillary, inguinal and perianal skin areas that causes painful, fistulating sinuses with malodorous purulence and scars. Several chronic inflammatory diseases are associated with the metabolic syndrome and its consequences including arteriosclerosis, coronary heart disease, myocardial infraction, and stroke. So far, the association of AI with systemic metabolic alterations is largely unexplored.Methods and FindingsA hospital-based case-control study in 80 AI patients and 100 age- and sex-matched control participants was carried out. The prevalence of central obesity (odds ratio 5.88), hypertriglyceridemia (odds ratio 2.24), hypo-HDL-cholesterolemia (odds ratio 4.56), and hyperglycemia (odds ratio 4.09) in AI patients was significantly higher than in controls. Furthermore, the metabolic syndrome, previously defined as the presence of at least three of the five alterations listed above, was more common in those patients compared to controls (40.0% versus 13.0%; odds ratio 4.46, 95% confidence interval 2.02 to 9.96; P<0.001). AI patients with metabolic syndrome also had more pronounced metabolic alterations than controls with metabolic syndrome. Interestingly, there was no correlation between the severity or duration of the disease and the levels of respective parameters or the number of criteria defining the metabolic syndrome. Rather, the metabolic syndrome was observed in a disproportionately high percentage of young AI patients.ConclusionsThis study shows for the first time that AI patients have a high prevalence of the metabolic syndrome and all of its criteria. It further suggests that the inflammation present in AI patients does not have a major impact on the development of metabolic alterations. Instead, evidence is given for a role of metabolic alterations in the development of AI. We recommend monitoring of AI patients in order to correct their modifiable cardiovascular risk factors.
Highlights
Acne inversa (AI; referred to as Hidradenitis suppurativa) is a chronic, destructive and scarring inflammatory skin disease with a prevalence of 1 to 4% [1,2]
This study shows for the first time that AI patients have a high prevalence of the metabolic syndrome and all of its criteria
It further suggests that the inflammation present in AI patients does not have a major impact on the development of metabolic alterations
Summary
Acne inversa (AI; referred to as Hidradenitis suppurativa) is a chronic, destructive and scarring inflammatory skin disease with a prevalence of 1 to 4% [1,2] It mostly affects the intertriginous skin of perianal, inguinal, and axillary sites, submammary, periumbilical, retroauricular and nuchal sites can be involved [3,4]. Infundibular hyperkeratosis and hyperplasia of the follicular epithelium leads to stasis in the hair follicle unit and formation of subcutaneous nodules [5] Already at this early stage, a perifollicular infiltration of immune cells is present in AI lesions [6]. Acne inversa (AI; designated as Hidradenitis suppurativa) is a common chronic inflammatory skin disease, localized in the axillary, inguinal and perianal skin areas that causes painful, fistulating sinuses with malodorous purulence and scars. The association of AI with systemic metabolic alterations is largely unexplored
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