3 Evidence Checks Before Buying TENS for Period Pain

If cramps keep interrupting your workday, a small device you can use at home may sound appealing. Before paying for one, check what the evidence actually promises and what you would need to learn to use it safely.

Three claims to examine

1. “It is proven for every kind of period pain.” The review studied primary dysmenorrhea, pain without another underlying condition. Its findings should not be treated as proof for all causes of pelvic pain. If the cause of your pain is unclear, seek assessment before using TENS.¹²

2. “This setting works best.” The review could not establish whether high-frequency TENS relieved pain better than low-frequency TENS. Evidence comparing it with several other treatments was also uncertain.¹

3. “No medicine means no safety questions.” Adverse effects were poorly reported in the studies. NHS² guidance says not to use TENS with epilepsy or a pacemaker, or during pregnancy unless a doctor or midwife advises it.¹²

Plan the trial before the purchase

Ask a healthcare professional about pad placement and read the device instructions. Do not use TENS while sleeping, bathing or driving, or on damaged, infected or numb skin. Stop and remove the pads if they cause irritation.²

Decide what you would record during a trial: the setting, when you used it and whether you could do the activity pain had interrupted. Bring those observations to your review.

Period, Handled includes a Period Scorecard and cramp kit checklist. Use them to organize observations and questions about your wider pain plan. See the book.