Erectile dysfunction (ED) Erectile dysfunction (ED), commonly known as impotence, is a common condition in adult men. Prevalence: The incidence of ED in men is as high as 20%, but less than 10% of ED patients seek medical attention. The performance: the penis can not fully erect or erection is not firm, can not complete normal sexual life. Occasional impotence, mostly due to exertion or stress, adjustment can be restored. Early in the morning or during masturbation, the penis can be erected and maintained for a certain period of time. Etiology: psychological factors are the main cause; continuously progressing impotence, mostly caused by organic diseases. Diagnosis: The diagnosis of ED involves many aspects, including the patient and sexual partner, physical factors and psychological factors. Treatment: The main drug and surgical treatment. Assisted reproductive technology – artificial insemination (IUI) or in vitro fertilization (IVF) Premature ejaculation (PE) What is the definition of premature ejaculation? Short intravaginal ejaculation latency time (IELT), weak ejaculatory control, number of penile strokes in the vagina before ejaculation? The frequency of sexual intercourse to bring the other party to orgasm Prevalence: According to a 2013 survey, the prevalence of premature ejaculation (PE) in Asia Pacific men is 32%, but less than 7% of PE patients seek medical attention. What are the risks of PE? Reduced sexual satisfaction for both partners, such as distress, apprehension, frustration and avoidance of sexual activity. Affects fertility. Treatment of PE: Self-treatment, behavioral treatment, local treatment, medication and surgery are available.