Impotence is erectile dysfunction, low libido, erectile dysfunction, premature ejaculation are different diseases, their causes have some similarities, but there are some differences, usually related to bad habits, psychological factors, disease factors and so on. 1. Bad habits: long-term overindulgence or masturbation, long-term late night or overwork, long-term smoking and alcohol abuse, etc., will lead to low libido, erectile dysfunction, premature ejaculation. 2. Psychological factors: excessive psychological pressure, long-term anxiety and tension, resulting in low self-esteem, which can easily cause low libido, erectile dysfunction, premature ejaculation. 3. Disease factors: ① depression will have an impact on the level of sex hormones and the control of erectile nerves; ② hyperthyroidism will lead to an increase in the rate of cortisol hormone production and degradation, which will trigger sexual dysfunction; ③ circumcision or prepuce, which will lead to an increase in penile sensitivity, triggering premature ejaculation symptoms. The symptoms of low libido, erectile dysfunction, premature ejaculation, you need to go to the hospital in time for relevant examinations to identify the cause of the disease, and actively cooperate with the doctor for treatment.