Yes, parasites, and especially cleansing can cause intense emotional issues.
While cleansing, I can be very emotional, weak, etc., but when clear or after a killing spree, be strong and remember my previous emotional state as it was, a detox, cleansing period. I would have committed myself if I didn't have a full understanding of what these things can do to your mental state, so hang in there. Keep cleansing and someday you wont need the meds. :)