The acupuncturist will discuss your symptoms and what you hope to obtain from the treatments, just like any other doctor would. I told mine sleep, stress/muscle tension, anxiety, appetite, etc. There is another section on alternative medicines with threads similar to this. Those might help you as well.
I see mine weekly and notice an overall calming/soothing effect; generally I sleep better for a few nights. Acupuncture is said to have a building effect, where as you go more often the effects will last longer. The first time I went I only felt that way for maybe a day, now up to about 3 days but am sure everyone is different in their progression.