 [ Symptoms ] rash on shoulder that moved to neck left side and now a lumpswelling in front of neck what could be the cause  24 hours ago i noticed a rash on the upper left side of my back close to my neck tonight it has moved to my neck and i noticed a swelling on the left sick of my neck and could feel a lump that was tender to the touch i have felt dizzy at times today [ Disease ] this class of medications is used to treat nausea andor vomiting