What should you know about TENS shock therapy?

TENS sends low-level pulses from a handheld unit to electrodes on the skin. People commonly notice rhythmic tingling or tapping rather than a sudden jolt. The aim is to influence how pain messages are processed, so movement, rest, or a prescribed exercise plan may become easier. It does not remove the underlying cause of every painful condition and should not delay assessment of a new or unexplained symptom.

Settings differ by device and purpose. A comfortable sensation is generally the goal for pain-focused use; a painful or burning feeling suggests that the intensity, pad contact, or placement needs attention.

Read the instructions and ask a clinician to show you the pad positions for your painful area. Apply pads to intact, dry skin and check that they adhere evenly. Start at a low, comfortable setting and adjust only as directed. Turn the unit off before moving electrodes. Avoid use in water, during sleep, while driving, or over the front of the neck, head, broken skin, or an implanted electronic device. Use TENS as one part of a plan that may include graded activity and physiotherapy.

Remove the pads if you notice burning, blistering, a spreading rash, severe discomfort, dizziness, or a new abnormal heartbeat sensation. Seek urgent help for sudden loss of strength or sensation, chest pain, breathing trouble, or serious injury. Contact a clinician if pain is worsening, keeps returning, or is accompanied by fever, swelling, or difficulty using the affected limb. Electrical stimulation should not be used to mask a symptom that needs diagnosis.

Ask whether TENS fits your diagnosis, how to distinguish normal tingling from excessive intensity, where pads should sit, when to stop, and which exercises or treatments should continue alongside it.