Inflammatory abnormality of the skin Folliculitis 2016-10-15T13:35:26Z Inflammatory cells within the wall and ostia of the hair follicle, creating a follicular-based pustule. In contrast to folliculitis, perifolliculitis refers to inflammatory cells, usually lymphocytes, within the perifollicular tissues with focal extension into the adjacent reticular dermis. Folliculitis and perifolliculitis can occur independently or incombination owing to follicular disruption and irritation. Hair follicle inflammation Follicular pustule