Would love some thoughts on this. I'm a 39 year old healthy, antive female. Pain started in my hands, wrists, feet, ankles 1.5months ago. 2 weeks ago, I started getting burning down my arms, across my chest, in my jaw, and in my feet. Sometimes the burning parts itch. Sometimes they're numb. A week ago, I started having confusion and some memory issues. Super dehydrated and dry mouth. Heat makes the burning worse (I teach hot yoga). Caffeine possibly makes the burning worse (new observation). Been tested for RA, lupus and other inflammatory diseases- all negative. Being referred to a neurologist and rheumatologist. I can't work or drive and the burning keeps me up at night. Any thoughts?