I went for acupuncture for anxiety and panic attacks. The initial feeling was great, but then I broke out in a tremendous rash all over my body. The acupuncturist said I had a lot of bad "chi" in my body and it was coming out. She said she'd never seen such a bad rash, but she called the person in China who taught her and he told her that it does happen sometimes, especially if there's a lot of stress/anger/whatever built up in the body, it needs to come out somehow.
I didn't believe her and went to the ER because I was scared. BIG mistake on my part. They put me on steriods which started a whole chain of pretty nasty events.
HOWEVER...I do think that it worked, because my anxiety level since then has gone way down. I have not done acupuncture again, but have gone for acupressure and Reiki.
Will I do acupuncture again if I need it? Yes, absolutely. But I'll be more prepared this time and will listen to what she says.