Mostly fear. As we get near to experiencing areas of our memory or inner feelings which disturb us, rapid heartbeat and perspiration are some of the first signs. Occa­sionally pleasurable exenion. Idioms: in a cold sweat; no sweat; sweat blood; sweat of one’s brow; old sweat, sweat it out. ... A Guide to Dreams and Sleep Experiences

To dream that you are sweating, foretells that you will successfully come out of some difficulty, which has caused much gossip, with a new and better reputation.... My Dream Interpretation

The stinging pain from excessively hard and enduring work... Dream Dictionary Unlimited

A figurative protection from the coldness of hard times; research color and fabric... Dream Dictionary Unlimited

Putting on a sweater in a dream may be a remedy of comfort after having come in contact wiili someone who was emotionally cold toward you.

A sweater offers comfort and warmth around the upper body, including the heart, and thus may mention the need to improve your mood.

A pink sweater may express love, and a blue sweater may communicate peace.... Ariadne's Book of Dream

If you dreamed of wearing a sweater, you need to feel more affection from others in your life.

If the sweater was too hot or itchy, you are impatient to get started on something you have been thinking about for a long time.

If the sweater was too tight, you need to protect your reputation by cooling down your behavior with the opposite sex.

If you lost your sweater in the dream, you need to reconnect with a forgotten or neglected aspect of your own self.... My Dream Interpretation