An aging face in a dream often reflects an awareness of time passing -- a quiet confrontation with mortality or a shifting self-image you haven't fully come to terms with. Seeing yourself much older can point to anxiety about what you haven't yet done, more than fear of age itself.
When the Sun in the daytime, and the Moon in the night, in the beginning of any sickness, is impedited, the person is to be feared. - William Lilly (1602.-1681.)