Can i ask please, my face became suddenly very red today, even cheeks, it is for more hours. it feels like during a flu. i tested for corona negatively today and no temperature. my face has been swollen for weeks. thank you for your advice?

An allergic reaction and vascular disease are possible causes. If you have a rash, itchiness or wheezing, these are other associated allergic symptoms. Monitor breathing and please see a physician today. An IgE level, CBC, diff and evaluation of your cardiovascular status is recommended. Discuss the use of an antihistamine with the physician. Urgent evaluation recommended.