Acne Vulgaris: What is it, Risk Factors, pathogenesis, Types (Acne Fulminans, Conglobata & Excoriee), Diagnosis, Treatment, and Complications. Acne is a very common, often chronic, skin condition that leads to non-inflammatory and inflammatory skin lesions. There are 4 pathogenic causes of acne, including infection with the bacteria propionibacterium acnesContinue Reading