There is no shortage of symptoms associated with Crohn’s disease and they can be difficult symptoms to control. One of the worst is nausea. Everyone has been nauseous at some point in his or her life. It’s the feeling of an unsettled stomach, as if your intestines are twisting and twirling, antsy, excessive mouth-watering, and ultimately feeling you are about to throw up. Sometimes the feeling of being nauseated takes time and grows gradually, but other times nausea hits suddenly just before vomiting. Nausea can occur because of many conditions, such as acid-reflux disease (GERD), Crohn’s and ulcerative colitis or viral infection. Other triggers of nausea are pregnancy, motion sickness or as a side effect of medications. These are just a few potential causes of nausea.