Don't let it go without treatment. It can get worse so quickly and quietly you'll barely even notice it, and then suddenly you'll be very, very ill.
STAY AWAY FROM PREDNISONE unless it is absolutely a life-saving measure. Prednisone WILL destroy your body in many ways. Avascular necrosis, teeth breaking, osteoporosis, diabetes, and much more. It is a nasty, nasty drug in the long term.