I've got little red bumps on my skin. it started on my legs. the next day, it went into my arms, and now my chest. what is it ? what do i do? it's also itchy. thx for your

You should probably go to a doctor because they would be able to give you a better diagnosis on what it is.

It could be many things. You could be allergic to your laundry detergent, or you could be allergic to something you eat. It could be many things, the best thing to do to find out is go to your primary care physician.