If a woman is infected with HPV type 18, if the infection only causes no cervical cancer, most women will not feel anything and will only be detected during routine HPV tests. HPV type 18 is a high-risk type, which can easily lead to cervical cancer. Once it causes cervical atypical hyperplasia or cancer, it will show a series of symptoms, such as bleeding during intercourse and a cauliflower-shaped cervix.