Acne is a common, inflammatory skin condition characterized by blockage and inflammation of hair follicles and sebaceous glands. Most people experience acne at some point in their lives, and it’s important to know that the condition is not caused by poor diet or hygiene habits. Known causes include bacterial overgrowth, hormonal changes, oils in the skin, follicular plugging, certain medications, genetics, and more. Acne can be very minor, with periodic blemishes, or quite severe, with inflamed, painful papules and nodules. For some, acne and the resulting scars can negatively impact self-esteem and emotional well-being.