Burning sensation on random parts of my body

So for the past two weeks, I’ve been finding parts in my body that feels like I got a burn. No rash, no bumps, no visible sign of irritation. Whenever I touch the spot, it tingles and hurts just like a burn would. I haven’t changed my lotion, soap, or anything. The burning spots are usually on my outer thighs and arm right where the elbow meets the forearm. The burning will be there for a couple days and then go away but will reappear somewhere else. I dont know whats happening!