Random rash on arms and legs?

So one day I woke up and my ankle itched. I itched it, and later on it broke out in bumps, but it still itched. Now every time I seem to itch an area on my arms or legs I get little red bumps. I'm only allergic to perkisets and iodine as far as I know, and I haven't been in contact with any. I haven't changed my laundry detergent or body soap, and I've been using the same lotion for years. I've been putting on Allegra anti-itch cream but it doesn't work for long. I have no insurance so I would like to avoid a doctor visit if it's something stupid or mild that will go away on it's own. They look like little red bumps, not bites or anything like that.