Hi
i m not a runner but try to walk everyday if possible. I ve recently been diagnosed with Achilles tendonitis because of tight muscles in my lower back, backside, hamstring, calf right down to the Achilles' tendon.
I am sure this is PD and am having gentle massage from an osteopath and a Bowen therapist which help at the moment.
hope you can get some treatment
bw. Samdog