Acne vulgaris is an inflammatory disorder of the pilosebaceous unit that occurs as a result of a hypersensitivity reaction to normal circulating levels of androgens and is aggravated by Cutibacterium acnes (formerly Propionibacterium acnes). more… Acne vulgaris

Pyoderma gangrenosum (PG) is a rare, noninfectious, neutrophilic dermatosis that presents with inflammatory ulcerations of the skin. more… Pyoderma gangrenosum