@gangcarotid1 In retrospect I realized that the chronic itch in that ear was likely early SCC growth. What brought me to seek diagnostics was a very sharp pain that began intermittently but progressed to continuous over 8-10 weeks. This was the beginning of the tumor invasion into the mastoid bone causing pain. The unrelenting pain keeping me up at night was not diagnosed by three ENTs because nothing was visible in the ear canal or on initial scans. Finally an ulceration appeared on the skin surface which encouraged referral ENT to use his videoscope and biopsy the area. Right before surgery I also had a few symptoms of facial nerve deficits and a metallic taste in my mouth.
This search for answers continued for 5 months via various doctors until I requested a referral to the University of Michigan ENT where they diagnosed it. Then delay in scheduling my surgery led me to pursue treatment at Mayo Clinic Roschester, where the amazing team has prolonged my life, so far so good.