How's this for dredging up an old thread! But it was the topic I wanted, so instead of starting a new topic...
So, reading the thread over, I did check the Mayo Clinic guide to symptoms of Plantar fasciitis. However, although my feet hurt when I get out of bed, especially my left foot, it is never my heel, as described in "symptoms." When I walk it feels like I have damaged the outside part of arch, but also sometimes feels like it is just an extension of an ankle problem. That's with the left foot. On the right foot, the ball of the foot hurts sometimes.
I have had to switch to wearing sneakers a lot. I have Tevas and Chacos here. Nothing could be worse than those Chacos, because they (as Joe has said) feel like having a brick on your foot, and the arch is in totally the wrong place. There is an arched area in Chaco soles that is in front of the heel, on the outside of the foot. Why would anyone want an arched area there? Ouch! In fact, I never had this particular ache problem in the past before I bought the damned Chacos. It is possible they CAUSED the problem, or at least, greatly aggravated it. They are cute, but are by far the most uncomfortable shoes I have ever owned. Take that, Mr. Chaco.
On the other hand, the Tevas don't provide enough support. So, I stick to my Asics running shoes. I wear flip flops, too, but only to walk a block.
I talked to a physical therapist who is my neighbor here (talked to him in Spanish so I may have missed something, or he missed something) and he did this big poke into my arch, but I guess I didn't make him understand where the problem was, because he didn't poke the right place. I just about jumped out of my skin. Then he was all like, "Aha, see there's your problem." I'm thinkin' gee, anyone could have poked me that hard in that spot at anytime in my 59 years, and I would have jumped out of my skin. But it wasn't near where it hurts! He was saying I should get an Xray to look for bone spurs, be looked at for Plantar fasciitis. At least, that part was good advice. And he said that the tropical climate, the heat and humidity, do cause inflammation. Also probably good info. And he kind of showed me a foot exercise I could do, curling toes around a towel or something like that. Or, he said, you can do it on the beach in the evening, using the sand instead of a towel.
What if I have to quit hiking???

I have been looking at some really fancy pannier racks to put on my full suspension mountain bike, and thinking of devising a dirt road route from Eagar to Flagstaff--I believe it's possible. Awesome racks:
http://www.oldmanmountain.com/ (I have a road bike, too, but mtn. bike touring sounds more fun.) And thinking about that 100+ mile lower Colorado River run from above Ehrenberg/Blythe all the way to Imperial Dam near Yuma. And other river trips. Sea kayak touring, etc. Things to do if I can't backpack any more, that is.
Any thoughts or experiences? Hope it all gets better when I get home to DRY Arizona! It has really cut into my plans here in Costa Rica. Yesterday was a national holiday here, and I had planned to go back to Curu Wildlife Refuge, but it is only seen via hiking, basically, so I didn't go. I am really trying to stay OFF my feet more. There is a bike here at the house. I rode it to school the other day. Two blocks. Sheesh. That's bad, when you don't want to walk two blocks. I don't have my hiking boots here. They might be of help as well, they are more comfortable than my Asics.
I'll have to change my screen name, to, to azkayakr or something.

Sorry to go on and on, but I'm worried.