To dream of aging in a dream represents feelings about witnessing yourself or someone else slowly becoming wiser about a situation.
Negatively, aging in a dream may reflect the awareness of yourself slowly becoming annoyed or bored with something. Becoming bored with other people’s behavior because you have witnessed so much of it from so many different types of situations. The slow growing awareness of experiencing people prove their childishness or selfishness to you. Slow growing annoyance with relationships. Slowly learning about personality problems in people you have only heard of and not experienced first hand before.
Example: A man dreamed of seeing the face of a woman who was giving him oral sex slowly age into a old woman. In waking life he was slowly growing annoyed with his girlfriend using him for his money. The aging in this case may have reflected his slow growing awareness of his girlfriend using him for money and not really loving him at all.