Which symptom after NMES should be reported as a potential adverse effect?

• A. Mild warmth at the skin.
• B. Light tingling that resolves quickly.
• C. Persistent numbness or tingling after treatment.
• D. Short-term muscle fatigue.

Answer: (C)

When evaluating adverse effects after NMES, focus on signals that suggest nerve involvement rather than normal sensations. Persistent numbness or tingling after a treatment session indicates a potential issue with nerve function and should be reported for safety reasons. This isn’t a typical or expected post-treatment response and could reflect excessive intensity, improper electrode placement, or underlying nerve sensitivity that needs clinical assessment.

In contrast, mild warmth at the skin, light tingling that resolves quickly, or short‑term muscle fatigue are common, transient experiences with NMES and usually don’t signal a safety problem. If these sensations disappear soon after the session, they don’t require immediate reporting, though any unusual or worsening symptoms should still be discussed with a clinician.