different kinds of acne
Types of Acne. The most common types of acne are acne vulgaris. It appears most often in teenagers and young adults. This included non-inflammatory acne and inflammatory acne. These kinds of acne are quite common and are usually found on the face area and nose.
Put simply: 1  Grade 1: Open comedones. 2  Grade 2: Open and closed comedones and some papulopustules. 3  Grade 3: Pustular Acne. 4  Grade 4: Nodulocystic Acne.