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A little background. Two years ago I developed an unexplained stress fracture (confirmed with MRI, I'm not a runner, there was no specific injury) and was in a walking boot for 5 months and in a cast for one month (onset was May 2015, stopped treatment November 2015 with three months of PT following). About two months ago (early Feb 2017), my foot started hurting again and it's been confirmed that I do not have a stress fracture or ligament damage with MRI. I also have normal blood flow confirmed through a vascular study, normal bloodwork, and normal bone density. My doctor thinks i might have mild CRPS and is referring me to a pain specialist.
My symptoms: my left foot is noticeably a different temperature (both hotter or colder) at most times from my right foot, and is usually mottled dark purple or bright, bright red. The coloration varies quickly, seemingly with a mind of its own. It's sometimes slightly swollen, and is usually very sensitive to shoes, socks, sheets, shower water, touch, etc. I've been limping a lot but it hurts more at rest than during activity (but hurts more with more activity). I often can't bend my toes due to stiffness, and my left foot is noticeably drier than my right. When looking at the McGill pain scale, I don't think it's all the way up at CRPS levels, but probably more hovering around fracture, plus or minus depending on the day/hour/minute. I haven't had any abnormal hair/nail growth or sweating. My podiatrist gave me a Quell device (kind of a portable TENs) and that helped for two weeks but I'm back in pain.
I've done my internet research and know that a lot of it fits with a (very mild) case of CRPS, but not 100%. I guess I have two questions that I haven't really been able to find good answers to.
1) Is it normal to have mild cases of CRPS/for it to start mildly? Also, it's completely abnormal for it to start a year and a half after the injury event, right?
2) What questions should I have prepared when visiting a pain specialist?
Thank you in advance
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