What Causes Itching On Scalp And Rashes On Chest And Hand?

Hello.. so 2 days ago woke up with severe itch on my scalp. Now raised odd shaped bumps ( not pimpil type) now around my face is itchy too and the rash is spreading to my chest. I also have a different(?) Type of rash on my hand little white blisters that look wet, but when thy POP the are dry and make me peel in the area --