It probably is an AI thing but it also can be a sign of hypothyroidism, which is also an AI thing and tends to go along with other AI diseases. You may want to call your doc and see if they can check it while you are feeling bad, since it tends to come and go. Is your temperature really low too? This is something to tell your doc if it is. Your hypothalamus controls your temperature and I've known some people that have arthritis in their neck and it pressed on it or something and they had really low temperatures, especially on waking. This is not good (its called hypothermia) and it can cause like brain damage and stuff. I've had it for a while, can you tell? LOL. I hope you feel better soon and dont' start getting the hot cold switch off. Take care and let us know if you figure it out.
--Doctors are men who prescribe medicines of which they know little, to cure diseases of which they know less in human beings of whom they know nothing.--Voltaire (1694-1778)
Ills--Sjogrens-Lupus-like AI Disease, Hashis, Vitiligo, spinal stenosis/fusion with plate, salivary/lymphectomies, Diabetes, NAFLD, COPD, RLS, neuropathy, trigonitis, hystero, diffuse brain atrophy
Meds--Plaquenil, Evoxac, Metformin, Synthroid, HCTZ, Estradiol patch, Prosed, Klonopin, Soma, Ultram, Vicodin, Restasis, Albuterol,steroid injections, Protopic & Triamcinolone Acetonide ointments