Great suggestion, cemc.
I had some problems with my throat this last winter. Felt very tight and painful for more than 2 months, but wasn't a typical sore throat. Usual tests showed up nothing. I read that some folks can develop a chronic spasm in a muscle in their throat, and I remembered that this started right after I was badly grieving for a friend that died. I asked my PCP for a few muscle relaxant pills, and it cleared up within 3 days.
I also experience periodic hoarse voice - comes out of nowhere, may last hours or a day or so, goes away, and then comes back again randomly. I suspect that it is a form of inflammation from my PsA. I know that folks with RA can develop inflammation in the joint in the vocal cords (yep - there IS a joint there!). The periodic hoarse voice been going on around 6 months or so for me. I haven't bothered bringing it up with my rheumy yet, as we've been dealing with a lot of other issues.
Psoriatic spondylitis for just 3 years, already on disability. Failed with anti-TNF's and methotrexate; can't take NSAIDS; not on any regular pain meds. On the autoimmune protocol of the Paleo diet, with pretty good results so far. Also have to avoid high-oxalate foods.