Pimples are generally referred to as acne, 21 years old face acne all the time may may be due to a combination of reasons, such as abnormal hormone levels, sebum secretion, inflammatory response and some other factors related.
1. Abnormal androgen levels: a key factor in the development of acne.
2. Excessive sebum secretion: when the level of androgen is elevated, it promotes the secretion of sebum in large quantities, thus leading to the occurrence of acne.
3. Abnormal keratinization of cells around hair follicles: this can lead to obstruction of sebum excretion, resulting in acne.
4. Inflammatory response: The action of Propionibacterium acnes and the inflammatory response caused by the above three etiologic factors work together to cause the onset of acne.
5. Other causes: genetic factors, drug factors, dietary factors, environmental factors, psychological factors, etc. In addition, smoking and drinking, obesity, etc. are also related to the occurrence and aggravation of acne.
If you are 21 years old and have acne on your face, it is recommended that you go to the hospital and consult your doctor.