Inclusion Criteria:  patients aging from 18 to 75 years diagnosed with prostate cancer undergoing ADT; with an average of 3 or more hot flashes a day for at least 3 days before enrollment and no other clinically significant disease; not receiving any medications for hot flashes nor did they have a previous history of acupuncture treatment.  Exclusion Criteria:  hormonal treatment other than GnRH analogue, daily treatment with psychotropic drugs, newly started or changed alternative medications with possible effects on flushes uncontrolled hypertension or metabolic disease, inability to move/lie on the side, and treatment with anticoagulants or a pacemakers.