Inclusion Criteria:  Age >18 years to 99; Diagnosis of Idiopathic Chronic Orchialgia (ICO) English Speaking (does not need to be native language)  Exclusion Criteria:  Pain intensity rating less than 2/10 at time of first session Inability to read or write Inability to follow directions  4 .Contraindications for TENS (Nickel allergy, pacemaker, open wound in TENS application area)  5. TENS use in last 5 years.