Sudden Skin Rashes

[alittlepronetopanic]

Can anyone help identify these on my arms? I noticed it last week and it appears to have gotten a little worse since then.

I've not changed anything in terms of soaps or food and I literally cannot think of what may have caused it.

They're a little itchy at times.

I've take an antihistamine most days but it doesn't seem to affect the rashes either way.