Red Spots Around my Collar Bone. I'm 14 and It's Getting Worse and I'm Feeling More and More Sick. What Could it Be?

A few days ago i found a couple redish spots around my collar bone and they didnt hurt or itch but i felt dizzy that same day and the next day i looked in the mirror and they almost tripled and i felt even more dizzieness and im 14 and ive felt sick from that day on but they went away and a week later they came back even more of a red color

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