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It's not the cheapest thing in the world to solve, so that's the bad news. The good news is that it can be dealt with. First, you need to get rid of most of the pain symptoms, night splints are the most effective way of dealing with that. They're cumbersome, they're a bitch to sleep in, and they can get kind of hot. I also had a weird issue where the bottoms of my feet got dry from them. But they're also the best way to resolve the pain. The issue in your foot needs to heal with your foot at a near 90 degree angle, having your foot in a relaxed position while you sleep at night means the fascia heals in the position, the pain in the morning is you breaking down all of the hard work your body did while you were sleeping. Night splints prevent your feet from dropping downward allowing the tissue to heal properly. Secondly, you have to gradually build arches into your feet over time. You need a hard orthotic that pushes up on where your arch should be, if your feet are flat you probably need one that's a very mild arch. If you're in a lot of pain, maybe don't jump right into an orthotic right away, start with just sleeping at night with night splints on. 3. Physical Therapy. Chances are your feet aren't the problem, I had weak hips, weak ankles, and tight calves that cause my fascia to break down. The body is a multitude of systems working together, chances are a lot other areas of your body helped create the problem you currently have. If you don't have insurance just hop online and start googling, youtube was a big help for me as well. But if you do have insurance, talk to your doctor and go see a professional therapist. 4. Don't ever wear shoes with an elevated heel, ever. Wearing running shoes all day or anything with an elevated heel is really, really bad for your feet, and causes all kinds of weaknesses in your body. The other thing it does is it shortens the length of your calve muscles, I had to spend multiple painful nights rolling out my calves to get them to relax in certain areas, and go a full year of wearing neutral shoes before they were normal again. Using a lacross ball to relax the muscles in my feet was a big one. Also pushing down on a frozen water bottle to help create arches. Toe spreaders help if you have wide feet and your shoes don't fit width wise(also really good for women who wear heels).
This kid is a little strange, but a lot of his techniques helped out. His section on shoes is really solid. I basically only wear chuck taylor's a set of mid support new balance for running. If you need a dressier shoe clarks aren't bad.
As far as orthotics go I tried the Treadwell's he recommended and didn't find them to be all that helpful(could be different for other people). I ended up dropping 350 bucks a pair of custom fit orthotics designed for strengthening my arches. For the last 6 months or so I switched to Vibram barefoot shoes, and my arch is actually getting even more steep and my feet are much stronger. I'll likely switch back to orthotics and chucks for the fall.
Here are the splints I used(I slept in them every night for 6 months).
My recommendation putting a lot of pillows between your legs and sleeping on your side with them on, if you sleep on you back prop up your legs with pillows(probably the best solution). Sleeping on your stomach is basically out of the question. I did it a couple of times by hanging my feet over the bed, but you end up hyper extending your knees while you sleep.
Sorry that's a lot of rambling, fasciitis sucks, but you're better off long term dealing with it now rather than suffering the rest of your life. Hope this helps, good luck.
Edit: Go see an orthopedist, see if they can recommend an orthotic and give you a course of steroids. That's a start, I went to one, the steroids helped, but didn't cure it. Also, the orthotics he gave me weren't the best, but they weren't terrible either. The custom fit ones were way better.