I have had a good summer but went down a bit when the weather changed in autumn. I assumed lower thyroid output re colder temps and my vit D is low in range. Anyway, now I am suffering with abnormal hot and cold sweats. My skin can feel slightly burning but cold or I can suddenly sweat. All other signs are hypo e.g low bp esp diastolic to systolic ratio, pulse 56. The fatigue, pain, sluggishness and dizziness etc I know can cross over into hyper. I wondered if anyone else experiences this thermostat turbulence? I'm thinking about stopping NDT for a day or too even though just lowering my dose knocks me out.