TENS unit for a bulging disc: what to know

A bulging disc can irritate nearby tissues or a spinal nerve, causing back pain, buttock pain, tingling, numbness, or weakness. TENS sends mild electrical impulses through skin electrodes. Some people find that the sensation changes how pain signals are noticed, especially during a painful flare. Relief varies and may last only while the unit is running or for a short time afterward. It is a comfort measure, not a way to heal the disc.

Ask a physiotherapist to show you electrode placement for your exact pain pattern. Use intact skin near the painful area, begin with a gentle setting, and increase only to a strong but comfortable tingling. Keep moving within comfortable limits and follow the rehabilitation plan you were given. Do not place electrodes over the front of the neck, head, broken skin, or directly across the chest. Stop if the skin burns, pain sharply worsens, or new weakness appears.

Seek urgent medical care for new loss of bladder or bowel control, numbness around the genitals or inner thighs, rapidly worsening leg weakness, or severe symptoms after a significant injury. Arrange a clinical assessment for persistent pain, progressive numbness, fever, unexplained weight loss, or pain that repeatedly wakes you. A clinician can distinguish disc-related nerve symptoms from other causes and adjust treatment.

Ask whether your symptoms suggest nerve irritation, where electrodes should sit, which activities are suitable while you recover, and what changes should prompt a review. Also ask whether a TENS unit fits alongside exercise, medication, or other treatment you are considering.