RhoGam is a vaccine like globulin shot that was developed in the late 1960s to keep a Rh negative woman from becoming sensitized to the Rh positive blood of her fetus in the unlikely event blood mixing occurs. Rhogam works very much like an immunization.
However, some new research has shown that TENS may be effective for reducing pain in people who have fibromyalgia, especially in combination with other treatments, such as exercise. Fibromyalgia is often treated with various medications to relieve pain and improve sleep.
TENS (Transcutaneous Electrical Nerve Stimulator) is common in the use of electric current for pain therapy, especially people with lower back problems. In theory, Electric Muscle Stimulation units are not the same as a TENS unit used for pain relief, because it is a therapy which requires a prescription.