Rash and Itchy Skin

Hello, This is my first time posting, so let me first say thanks for reading and replying. Also, I apologize if this or something similar has already been covered. I tried to read through as much as I could to see if anyone had a similar issue, but I didn't have much luck.

My problem just started recently, and I've had no previous issues with it. My skin, specifically my inner arms, from my wrists up to my elbows, my forehead, my back, chest, and along my sides will randomally break out into what looks like a rash. With small red bumps that itch so badly that I almost can't function at times. There doesn't seem to be any specific time that it occurs. It's mostly just random, but I've notice that heat tends to trigger it. Sometimes if I'm nervous about something they'll bother me as well, but it's mostly been the heat. Other times, it will just happen at random while I'm sitting at home. These red bumps show up and my skin gets very very hot, but after time it passes, and the tiny red bumps dissapear.

I haven't changed anything in my diet, or switched to any soap or detergent. I pretty much use/do/eat the same things I did previous to this happening. I've been using Calamine lotion as well as taking benadryl for it, and while the lotion helps alot when the rashes occur, it hasn't done much in the way of preventing them. Nor has anything else I've tried.

I haven't been to an allergist yet, but I made an appointment. I've never had any allergy related issues all my life, and I'll be 25 as of Saturday. So obviously I'm new to all this and I was just hoping to hear from any of you out there with the experience on what this might be. As I'm sure you know, it's entirely aggrivating to be trying to function in public when your entire body feels like its on fire and itches so bad you want to scream. I appreciate any help and thanks!

Hi, welcome to Healingwell! :)  This rash could be from anything so it's good that you are going to see an allergist.  But in the meantime, you can check out this website: http://www.dermnetnz.org/

I visit that one frequently because I get frequent rashes myself with no rhyme nor reason except mine don't itch but they burn.  I'm still trying to figure it out.  I haven't seen an allergist yet either but I don't think mine is allergy related.  If you go see the allergist and they come up empty handed.  Take a picture of these rashes and see a dermatologist.  Maybe they can have more insight to what is causing this.  If you find out anything, come back and tell us if you can.  I'm curious as to what it could be myself.