Itchy rash on small areas of upper chest and shoulder?

Need eval to know. These lesions need to be visualized & a history needs to be obtained in order to make an accurate diagnosis. Sometimes lab testing or biopsy is necessary.
Reaction 2 somthing. If it's red and itchy, more than likely it's an allergic reaction to something (new skin care product, soap, detergent, fragrance, etc...) could be something else though, so should be checked and treated to give you relief.