Pain seems to be the main thing that brings patients to most acupuncturists. The 'conditions treated by acupuncture' page has discussions of all sorts of different pain conditions, while the link below takes you to research summaries on the effectiveness of acupuncture in treating pain itself, plus a variety of specific disorders:
http://www.jcm.co.uk/catalogue.php?catID=721&opener=0-691-721
