Numerous conditions can cause right-sided upper abdominal pain. According to The Merck Manuals Online Medical Library, the most common cause of abdominal pain is intra-abdominal disorders. Organ problems can cause localized or diffuse pain throughout the abdomen.

Acid reflux disease--often called gastroesophageal reflux disease, or GERD--is a condition in which stomach acids move in a retrograde direction, rising above the level of the junction of the esophagus and stomach and sometimes into the mouth.

Excess stomach acid production can lead to upset stomach, acid indigestion, abdominal pain, bloating or intestinal problems. Many people experience acid reflux or heartburn problems when the stomach produces too much acid.

A rash is not a symptom of a gluten sensitivity, which is marked primarily by digestive symptoms. If you experience a rash after consuming gluten, it is more likely dermatitis herpetiformis -- a rash caused by an autoimmune reaction to gluten known as celiac disease.

When food becomes contaminated, it has the potential to make you sick. Depending on the source and level of contamination, the effects of contaminated food can cause symptoms such as cramps, nausea, diarrhea, vomiting, nerve damage, allergies and paralysis.

Having your wisdom teeth pulled or surgically extracted can be a painful experience. Following the instructions of your dentist or oral surgeon minimizes your risk of complications and helps minimize pain and swelling.

Alpha-lipoic acid, sometimes referred to as ALA, is an antioxidant produced in small amounts by the body. It helps cells generate energy and purifies metabolic waste products called free radicals.

If your doctor has ordered you to undergo a colonoscopy so she can better determine the health of your rectum and colon, she will probably also advise you to follow a colonoscopy prep diet to help you clean out your bowels before the exam.

Whenever you suddenly change the way you eat, you may develop gastrointestinal symptoms, such as upset stomach. Various factors cause digestive problems, which may include nausea, diarrhea and abdominal pain.

Though high in fiber, protein and vitamins, beans always seem to get a bad rap. High amounts of a sugar substance called oligosaccharide occur in the skins of beans and other legumes. These oligosaccharides generate gas in the bowel when they break down, which can lead to flatulence.

Magnesium citrate is a supplemental form of magnesium, and you should take it with food or shortly after eating. Swallowing magnesium citrate on an empty stomach can lead to diarrhea and other types of digestive upset, according to MayoClinic.com.

Bloating is caused by gas that is built up in your stomach or intestines. The main causes of bloating and excess gas are stress, anxiety over consumption of fatty foods and smoking. Regular practice of specific physical exercises may be helpful in relieving bloating.