Expanding circular rashes
My son is 6 years old and he was admitted into the hospital because he wouldn't stop vomiting and threw out whatever he digested. Then after that, he started getting rashes on his neck, back, and stomach. After 2 days, the rashes spread throughout the body that look like rings. It started small then expands to more than 3inches after a day. My always active son was now sleeping most of the time which is quite worrying. Even his pedia was worried and doesn't know what it is and refered me to another doctor. Can someone know what this is? I've attached photos.