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Results 1 - 1 of 1 for acne vulgaris OR "comedones," closed
  1. Acne - vulgaris on the back (image) 
    ... wide erythematous (red) pustules with large open and closed comedones. Permanent scarring may follow a severe case of acne. Men are more often affected on their shoulders ...
    https://medlineplus.gov/ency/imagepages/2357.htm - Medical Encyclopedia