I have been dealing with IBS (Irrtable Bowel Syndrom) for over 6 years now, and have taken many different medications to help deal with the pain. Over time, all of the medication has become ineffective, so recently I went to my doctor. I have heard about an experimental pill called Zelnorm, so I suggested it to my doctor and, alas, she perscribed it for me. After taking just one dose I started feeling its negative symptoms, so yes I have stoped taking it. The pain it caused wont go away. One of its symptoms are head pain, it has been at least 15 hours since I have taken it. What I feel is a numbing, tingling pain on the left side of my head. My left ear, eye, and left side of my tongue also feels the same pain. I also feel a strange, warm sensation down the left side of my neck, but no matter how much I swallow, it wont go away. The other symptoms from Zelnorm have gone away, but my head pain will not. Is this signs of an infection? Should I go to my doctor again? Should I wait for 24 hours to see if the symptom lessens and goes away? Suggestions would be appreciated.