my brother has a grade 4 glioblastoma multiforme he has had it nearly 3 years over the last 2 months his entire body has been itching he scratches constantly to the point of bleeding and scabbing. the more he scratches the more he bleeds. we have tried benadryl liquid/pills, calamine lotion, a&d ointment, aveeno oatmeal baths with milk, caladryl, now we have been given a prescription for permethrin cream from the hospice doctor and this is not working. he itches everywhere, back, legs, arms, buttocks, private areas constant please help us help him