i had this problem as well, and i was switched from synthroid to armour, but i think thats just me, i dont think that would solve the problem for everyone. i use
aveeno skin relief lotion at night. i also use
aveeno skin relief shower gel, it makes a world of difference. and if the itching is horrilbe i take some allergy medicine and that helps, i either take benadryl or chlor-tabs, sometimes both if its really bad.