If the rash has appeared suddenly then it can be due to contact dermatitis, viral rashes or seborrheic dermatitis. But if it has been present for quite some time, then it can be due to rosacea. Rosacea is a medical condition presenting with redness, swelling, discoloration and sometimes pimples and dry skin over the cheeks, nose, chin or forehead.
What exactly it is can be confirmed only after physical examination by a dermatologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Can you be a little more descriptive? Are they small, have they increased in size? Do they itch? Are they flakey? Maybe add a photo.