Common causes of left sided abdominal pain in men include prostatitis or left sided varicocele, both of which may cause pain in the lower abdomen. In terms of treatment, if the patient suffers from prostatitis, usually oral medication and topical medication are the mainstay, commonly used oral medication are Prostacyclin capsule or Prostacytongue capsule. The actual topical medication is mainly a choice of prostate ampoules or wild chrysanthemum plugs, both of which can relieve the pain in the small abdomen caused by prostatitis. In addition, there are some patients who have abdominal pain caused by varicose veins, which can be relieved by taking oral medication. If the varicose veins are of degree III, a more serious degree, they need to be treated by surgery.