The past few mornings I've been waking up with bumpy itchy hives all over me. They tend to dissappear after I've been awake for a few hours. My first thought it that it's the blankets I've been using or something on the blankets. So if I want to wash them, what's the best way to wash something that probably has an allergen? I don't believe it's the laundry detergent because I don't seem to have a problem with the hives except first thing in the morning, and my clothes don't really bother me at all.