My wife is 58. About five years ago she had a hysterectomy. The day after, she began having severe itching spells all over various parts of her body, like arms legs and back, with no rash. It seems to happen more often after she come out of the shower or there is a change in temperature from warm to cool. Many times it is so severe that she has to take Benadryl which wipes her out and she goes to bed. Creams and lotions don’t help. I am thinking she has some kind of nutritional deficiency. A time before this she was checked for allergies and was found to be allergic to dust mites, but I am not sure that is related. What is your prognosis?