I had ear pain also from a cancerous lymph node, level ll, before starting radiation treatment, which was eventually controlled by the pain meds, and few weeks of radiation. Anytime there is pain or continued pain, doctors like to know. I also liked to put the Fetynal patch on my upper chest or shoulder area, with the date marked on it, so I could see it better, not double dose, know when to replace it. Follow prescribing precautions, discarding. These can easily be picked up by pets, or even stepped on after discarding if not careful.