A.W.
It could be bed bugs or baby spiders. I have had them on me. I now stripe everything about once a month during the summer. I pour baking soda on the mattress and rubb it in then vaccumm the mattress. I vaccumm the every side and under the bed. All the bedding gets washed too. My daughters swell up like that its there way of protecting and healing. Hydrogen Peroxide helps me some they itch for a long time too.