The redness could have a large number of possible causes. By itself, it is not possible to say what this could be. Have you visited a doctor for this condition? If not, you should do so as soon as possible. Some of the causes of such a reaction could be serious and should be attended to without delay. For example, this may be a mild allergic reaction, but since you are unaware of what is causing it, you may at some time expose yourself to a larger quantity of the allergen, leading to a more severe reaction.
Does this happen regularly? You need to make a note of when the flushing occurs - where you are at the time, what you have eaten or touched, any medication that you may have taken - and see if there is a pattern. Apart from allergies, the possible causes include anxiety and stress, bacterial, fungal, or viral infections, a skin disease, clothing, and a number of more serious skin diseases. Your doctor will be able to do a full physical examination, explore your medical history, and investigate any other symptoms and conditions that may be related, and then give you a diagnosis and suggest appropriate treatment.
answered by G M