It looks like someone drew a line down the middle of my forehead to my chin .
One side is normal the other side of my face including eye lid is red ,swollen and itchy. It comes and goes.Doctors have me on antibiotics every time it happens. They say it might be rosacea. With the research I've done so far , it doesn't sound like it.
How can I figure this out. How long can I take antibiotics.