Diarrhea, scrotal dampness and impotence may be caused by prostatitis and glans cancer. 1. Prostatitis: prostatitis can be induced when the prostate is repeatedly stimulated by physical and chemical factors. After being repeatedly stimulated by inflammation, patients may have symptoms such as scrotal dampness and impotence, and when it is serious, it may also stimulate the intestinal tract and lead to diarrhea. 2. Cancer of glans: when having unclean sex or bad hygiene habits, cancer of glans may be induced. After suffering from this disease, it can also make the patients have the symptoms of scrotal dampness and impotence. In the advanced stage of the disease, the tumor may metastasize to the stomach and make the patient have diarrhea. Diarrhea, scrotal dampness and impotence may also be caused by other reasons, such as condyloma acuminatum, too frequent sexual intercourse, etc., should go to the hospital in time to clarify the cause of the disease, and choose the appropriate method of treatment.