Contents. 1  Calf rash AND Forearm rash: Causes of All Symptoms. 2  Calf rash OR Forearm rash: Causes of Any Symptom. 3  Calf rash: Causes.  Calf rash: 1  Introduction. Forearm rash: Causes.  Forearm rash: 1  Introduction. Calf rash and Forearm rash and Behind knee rash (15 causes)  Calf rash and Forearm rash and Finger rash (15 causes) Calf rash and Forearm rash and Foot rash (15 causes) Calf rash and Forearm rash and Groin rash (15 causes) Calf rash and Forearm rash and Hand rash (15 causes) Calf rash and Forearm rash and Knee rash (15 causes) Calf rash and Forearm rash and Kneecap rash (15 causes)
Gas in the digestive tract - the esophagus, stomach, small intestine, and large intestine - comes from two sources: 1  Swallowed air.  Normal breakdown of certain undigested foods by harmless bacteria naturally present in the large intestine, also called the colon.
When lying down, swallowed air tends to pass into the small intestine, which can cause you to pass gas. 3. Burping foods: Burping is more common with foods that relax the sphincter at the lower end of the esophagus where it joins the stomach. Peppermint, chocolate, and high fat foods will do this. 4. Passing gas: The colon contains billions of harmless bacteria. The stomach isnât great at digesting certain carbs, so the bacteria in the colon have to do the work. Those foods will cause you to have more gas because the colon bacteria are working hard.