i am at my wits end with this itchy scalp.3 years now. thyroid test keep coming back normal, i have a b12 deficiency and folic acid probs.would this cause the itching along with adrenal fatigue. last year my results were 5.0 the range being 0.00- 34.00. just had another done but the ranges were not given. just said target cells were present. with a serum tsh level of 0.81 ranges 0.40 - 4.00 no action needed.