A skin colonizer disrupts inflammatory and humoral immune defenses in hidradenitis suppurativa
Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease associated with a polybacterial dysbiosis devoid of a known pathogen. Here, we report that HS patients mount IgA and IgG responses against skin colonizers, notably Porphyromonas uenonis (Pu), a rare species selectively enriched in severe disease. In these patients, Pu foci are detected in the epidermis, surrounded by IgA deposits
