Nausea & Vomiting: Nausea is an uneasy feeling in which the person feels an urge to vomit, whereas vomiting is an uncontrollable reflex that expels the contents of the stomach through the mouth. Nausea and vomiting may occur separately or together. The common causes include motion sickness, emotional stress, indigestion, food poisoning, high fever or overeating. Nausea/vomiting might occur as an unpleasant effect of therapy, such as chemotherapy and radiation therapy.
Irritable bowel syndrome (IBS): IBS is also known as irritable colon, spastic colon, spastic colitis, and mucous colitis. An irritable bowel syndrome is a group of intestinal symptoms that occur together. The exact cause is unknown, but common causes of IBS are acidity, stress, carbonated foods and beverages, irregular hormone levels, and certain food and medications. Symptoms include abdominal pain, cramps, bloating, gas, constipation, and/or diarrhoea.