Flat red round spots on upper arm which appeared a few days into a cold.  Not responsive to antihistamine.  Sore throat on second day of cold, extreme fatigue, bad congestion.  Extremely painful to touch swollen lymph node behind right ear a few days before the cold started, pain has since subsided.
Hi ! Good morning. I am Chat Doctor answering your query. From the history of cold, and a tender post auricular lymph nodes, it seems to be a viral infection like rubella. However, confirmation of the diagnosis depends on physical examination and related investigations by your treating doctor. The management would be mostly supportive like an anti-inflammatory agent along with a proton pump inhibitor Chat Doctor.  I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing Chat Doctor to clear doubts on your health problems. I wish you an early recovery. Chat Doctor.