No, I never had postpartum itching, but I am highly allergic to dust mites. When the colder weather comes, I have to wash all of the pants, long-sleeved shirts, etc. because they have been sitting in my closet for month without being worn and have dust & dustmites. If I shave my legs and put on dusty pants, I will have a reaction. When this happens, sometimes I take a bath with baking soda. I also put Benedryl or Cortaid cream on my legs and/or I take Benedryl at night, orally. I have had reaction inthe past to laundry soap (I think). With skin allergies, it is so hard to figure out what it can be. Try keeping a journal of things you eat and things you use on your body and you may be able to find out what it is. It may be Postpartum itching, but also consider there is a change in the weather and allergies are abundant right now.