What is acne? Acne is a chronic inflammatory skin disease that involves the sebaceous glands of hair follicles, and it occurs on the face, back, chest and other areas rich in sebaceous glands. 1. What are the causes of acne? The causes of acne are complex and are mainly related to androgens, increased secretion of sebaceous glands, abnormal keratinization at the opening of the sebaceous glands of hair follicles, value-added Propionibacterium acnes and genetics. 2.What are the clinical manifestations of acne? Acne can manifest clinically with a variety of lesions. Non-inflammatory lesions include blackheads (open acne) and whiteheads (closed acne), while inflammatory damage includes papules, pustules, nodules, cysts, abscesses and scarring. 3.Does acne only grow on the face? Acne is a disease that involves the sebaceous glands of the hair follicles. It occurs on the face, but is also common on the forehead, back, buttocks and other areas with abundant sebaceous glands. 4.How is acne treated clinically? The treatment of acne depends on different causes, different types, different levels of severity, and the patient’s skin characteristics to choose the appropriate treatment plan; in mild cases, topical topical medications can be used topically; in severe cases, a combination of oral medications and topical topical medications is often required. 5.What are the new methods of acne treatment? With the development of science and technology, many new treatments for acne have emerged in recent years, such as laser therapy, red-blue light therapy, photodynamic therapy, herbal mask therapy, etc. 6.Can lasers treat acne? Today, lasers are mainly used to treat inflammatory acne and acne scarring. Specific wavelengths of laser can activate porphyrins and produce free radicals such as singlet oxygen to inactivate Propionibacterium acnes and achieve the purpose of treating inflammatory acne; the treatment of acne scars in our department is mainly done by the fractional mode erbium laser. 7. Can acne scars be treated? Severe acne can easily lead to the formation of scarring, which is often difficult to achieve through oral medication. At present, fruit acid peeling and laser therapy can be used to achieve more desirable results. 8.What is called drug-integrated mask therapy? This method is a new treatment technique commonly used internationally, which is a combination of medication and physical therapy. It is used for moderate to severe acne where other methods are less effective. 9.Why do some acne patients easily relapse after regular treatment? In the process of acne treatment, patients tend to stop medication on their own when they see a significant improvement in symptoms, or reduce the dosage of medication on their own, resulting in inadequate treatment is an important reason. In addition, poor lifestyle habits (such as staying up late, eating large amounts of spicy and stimulating food for a long time, etc.) can lead to the recurrence of acne. 10.What should acne patients pay attention to in their daily lives? (1) Do not squeeze or dig the lesions. Traumatic lesions can easily lead to the expansion of inflammation; (2) Use cosmetics correctly, and it is best to choose appropriate cosmetics according to the doctor’s recommendation; (3) Eat less animal fats, sweets and stimulating foods; (4) Avoid using drugs and foods containing bromine and iodine; (5) Avoid long-term use of glucocorticoids.