I underwent 33 rounds of radiation and only 2 doses of Cisplatin chemotherapy. During treatment I had occasional ringing of the ears, but nothing persistent and informed my treatment team of it. Two months after treatment, I began having headaches and earaches for about a week before they subsided. I'm not sure if it is from treatment or from taking gabapentin, which I had recently started around the same time. Ever since then I have lost much of the hearing in my left ear. I'll be visiting my surgeon/ENT soon for my 3 month PET scan, and will bring it up and try to find out if this hearing loss is temporary or permanent