itchy chest and back no rashskin rash on neck not itchynon itchy rash on neckitchy skin on chest no rashitchy arms and chest no rashitchy rash on scalp and necksudden itchy rash on neckitchy rash on back of neck at hairlineitchy rash on neck and jawlineitchy burning rash on neckitchy rash on face and neckitchy skin on neck and chest no rash