Hickey like rash on breasts. PICTURES INCLUDED Spreading? HELP?!

I've had extreme itching on my left breast and when I looked i have some strange hickey looking rash on my breastsand it's spreading. Waiting for my…

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27F - this appeared on left breast (looks like hickey but is not) and have also been having hive like rashes across chest under neck. Should I be concerned? This one is

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