My daughter has been on levothyroxine for 8 years ( she s 24) her TSH and T4 have been deranged for 5 months and now she looses consciousness when stranding , walking . She keeps spiking temps 38.2 , blood sugars drop to 4.2 occasionally she s now getting worse and in and out of hospital with the medics now putting her on propanalol . They say it s not likely to be thyroid related but EEG,Echo, 24hour tape CT head, chest and neck are all negative .. I m convinced it s thyroid related . ???