Inflammation of the follicular infundibulum, the superficial part of the hair follicle above the opening of the sebaceous gland.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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Follicular occlusion leads to spongiform infundibulofolliculitis causing rupture of the follicle leading to inflammation and subsequent bacterial infection.4 The diagnosis of HS is clinical with no specific criteria, however 3 features are consistent i.e.