I noticed it about three weeks or a month ago. I itch all over my body, though mostly my torso. It comes and goes. No visible rash, no bumps, no bites. I recently had a hip replacement surgery and was taking pain meds, but not in the last month. I take some vitamins and minerals, but nothing I haven t taken before. I take methimazole for hyperthyroid. I m staying with a friend. I checked her laundry detergent - all natural. Any thoughts?