I usually am intolerant to A/C but, like you am having GREAT difficulty with the intense summer heat here in western PA . I developed a 'flare' last Saturday (9-10 days ago) and have been unable to get a grip on the pain & exacerbation of symptoms. I read someone (forgive my forgetting her name) post concerning tracking barometric pressure. May be some real validity to the coincidence. I was diagnosed with RSD in January 2000. I have noticed some relation to worsened symtoms & weather change but thought (as usual) I was nuts. After a myriad of treatment modalities, I have setted with MS Contin 60 every 8h and Oxycodone 5-15 mg as needed for breakthrough pain. I have found Melatonin 5mg with & without Valerian to help with sleep issues without hangover effects. Note though, Melatonin for me, seems to have a 15 minute window. i.e. 15 minutes after I take it...the sandman visits and I can't keep my eyes open, I HAVE TO close my eyes & take advantage or it's a missed opportunity. I'm then able to get a couple hours of respite. So I guess instructions for Melatonin should say "Take med, lay down in quiet area & wait" For me I'm usually pleasantly surprised when I open my eyes & 4 hours have passed. I wish you well