Is it recurrent? Have you had it assessed? After a few years of running I irritated my Achilles tendons a few times and eventually became recurrent. Had to throw the kitchen sink approach to get it sorted with proper footwear, orthotics, stretching and improving running style (still somehow of a heel striker).
Also a sports med specialist prescribed Nitro patches to help with blood flow in injured Achilles tendons area which have notoriously poor blood circulation. Not a silver bullet but I believe it was part of the solution.
Discouraged by ongoing Achilles pain? The nitro patch was a game changer for one Canadian masters record-holder
runningmagazine.ca
Climbing and descending is the most fun part of cycling for me. But I'm also a lightweight.