The front and back of the growth of small particles, need to carefully observe the appearance of small particles to determine how the factors formed, there are several cases: 1, if this small particles are follicle-shaped distribution, the top is brown, no obvious self-conscious symptoms, touch a significant bump, consider the possibility of simple acne-like changes, is the internal secretion of a large number of sebum follicles led to a hyperplasia-like changes, you can choose to use topical The actual fact is that you can find a lot of people who are not able to get a lot of money from the internet. It is a human papillomavirus infection that is formed.