1, urinary system diseases: such as prostatitis, prostatic hyperplasia, epididymitis, varicocele, etc. It often leads to impotence. Some middle-aged and elderly patients are impotent because of prostatitis and prostatic hyperplasia;

2. Medication factors: Many drugs have inhibitory effects on sexual function in clinic, such as reserpine, guanethidine, digoxin, diazepam, furosemide and metoclopramide, which can cause impotence.

3. Male overwork: It's usually no big deal to have impotence occasionally: fatigue can cause impotence because of muscle fatigue or psychogenic fatigue caused by excessive brain use, anxiety and nervous interference arousal, including decreased brain function, decreased sexual interest, decreased excitability of emotional center of cortical limbic system, decreased secretion of pituitary gonadotropin and decreased secretion of testicular androgen.

4. Psychoneural factors: such as childhood trauma, or lack of sexual knowledge at the time of marriage, nervousness and anxiety, or disharmony between husband and wife and family relations; Or bad habits, such as excessive masturbation, so the sensitivity of the penis is reduced, mental stress, mental burden is too heavy. Will lead to impotence; Excessive mental or physical strength, or bad mental stimulation, such as excessive depression, sadness, fear, or indulgence, excessive sexual life, etc. , can cause cerebral cortex dysfunction and impotence.