Pimples are small blisters, pustules, or papule-like eruptions most commonly seen on the face, back, chest or shoulders. They are majorly characterized by inflammation, redness, and even pain at times. They could be pus-filled or water-filled. Some people tend to refer to them as zits or spots as well. Numerous pimples are known to be a symptom of a skin condition or disease called Acne Vulgaris or Acne in common terms.