The first stage of acne vulgaris is usually marked by blackheads and whiteheads (comedones). Thereafter, during preadolescence, red, inflamed blemishes may appear with different degrees of severity. Most superficial red blemishes heal by themselves within a week, but deeper cysts may require several weeks before disappearing. Some deep acne cysts may be painful and result in permanent scarring. | The first stage of acne vulgaris is usually marked by blackheads and whiteheads (comedones). Thereafter, during preadolescence, red, inflamed blemishes may appear with different degrees of severity. Most superficial red blemishes heal by themselves within a week, but deeper cysts may require several weeks before disappearing. Some deep acne cysts may be painful and result in permanent scarring. |