Dear Doctor, Now My father age is 81.He is retired state level officer from Tamilnadu government. Last week suddenly he was talking irrelevantly. We went to Doctor ,as per Doctor’s advice we have taken CT , MRI , Abdomen and Echo ,blood tests which these results are shown normal. TSH value (Thyroid test) only 39.6 which is above normal. SO doctor prescribed Eltroxin tab. But still my father is in same .