the underlying cause of acne is unclear. some are more prone to it than others. it is best treated with prescription-strength antibiotics and topical retinoids and benzoyl peroxide. if the lesions leave scars i would recommend evaluation and treatment by your dermatologist sooner rather than later in order to minimize/prevent scarring.
why do we get cystic acne? are there any good treatments? medicine vs. herbal (home remedies)?