omigosh, dude. i googled "yellow spots on my chest", because i have one on my breast, and i wanted to make sure it wasnt cancerous or anything. i was getting worried. but when i came across your post, i found that i have EXACTLY the same thing as you! its a little smaller, but its the same color and in the area. And im just recovring from what seemed like a head cold as well. i dont know what its from, but im happy to find im not alone. =] im still a little confused as to where it came from, but im definatly going to check with my docter on this. you should too.