The so-called acne actually refers to acne, which is a common inflammatory skin reaction in clinical practice. If a patient suddenly has a lot of acne on his or her face, he or she should consider whether he or she has bad habits, such as staying up late, working hard, smoking, drinking, or repeatedly eating spicy and irritating food, greasy food, or food with a high sugar content, or having problems with bowel movements, or having changes in his or her hormone levels, or depression. However, in some cases, the sudden appearance of acne on the face may also be related to the medication taken.