I think your on the right track. I had suffered with this for years on and off. Each time it took months to go away. A coach suggested the Achilles Healer to me and it made all the diff in the world. It seems to provide just the support i need while sleeping and running to shorten the time i suffer with the Achilles Tendonitis pain and allows me to still run.
Its been awhile since Mom and I ordered it so i had to google it just now to find it again.