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Put these troubleshooting steps in a sensible order when a patient reports burning under an iontophoresis electrode (assume current is running and you want to rapidly improve safety).

  • Restart with gradual ramp-up and monitor skin sensation/erythema

  • Inspect electrode contact (lifting edges, dry gel, air gaps) and re-apply for uniform contact

  • If contact is good but irritation persists, consider pH control measures (Ag/AgCl, buffering, appropriate ionic excipients)

  • Stop or pause the current immediately

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