I have been running BF for 3.5 years and started to reboot my running in September to build my aerobic base up to the max before Boston 2014. I've been running in zone2 for the last 5 weeks and slowly building mileage back up to where I was prior. Nothing new in footwear(barefeet) or terrain, (flat) just running along consistent and easy when my heel started to hurt. It's located along the bottom, outside edge of the heel and hurts when my heel touches down or if I'm sitting in the car on a long drive with my resting on the floor at a 90 degree angle. I didn't notice any trauma event but at this time I am having a hard time running and even walking. I've researched and fat pad syndrome sounds most like what I have unfortunately the treatments described are heel cups and orthodics after a long lay off and NSAID's. None of those sound appealing to me. Any insights here?