I have itchy spots all over my torso
Could it be an allergic reaction? Have you just started using a different laundry detergent?
My mum buys a different detergent every few weeks so who knows. I've had a small itchy spot near my belly button for days now, and I found out while I was showering this evening that more spots have appeared over most of my torso (stomach, upper pubic region, decolletage, underbust). Feeling the odd spot or two on my back and neck now too.
Sounds almost like chicken pox, but most likely just an allergic reaction. You might want to get it checked though.
Shingles is a totally different animal. Usually clustered, starts off as tingling and progresses to small blisters, the effected area will be red and inflamed and hurt like hell. Doesn't itch, or never has for me anyways.