HI,
I think the first question is, why doe she have this severe a case of itching? Is this a medication or other allergic reaction? A liver problem? A skin infection? Does he have a rash?
I hate to offer a suggestion about medication without having seen the skin of this patient because it may make quite a difference in the recommendation. There are topical agents you can buy over the counter that may help alleviate this, such as calamine lotion or topical benadryl. But he may need topical steroids or prescription strength medications instead if these fail. While trying some of the soothing agents, I suggest having this patient evaluated by a dermatologist as soon as possible as well.
however, the BG levels of the patient will need to be in check to control the skin ailment.