Acne can occur in various types such as pustule, cyst, papule (pimple), blackhead, whitehead etc, and to different people. These spots are noticed most of the times on the face, chest, neck and back. There are two main categories of acne. They may be non-inflammatory and inflammatory.

For non-inflammatory kind of acne, just a few blackheads or whiteheads will appear on the skin crust. They are simple in nature and do not require a physician