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.
There are two main causes of gas: swallowed air and the normal breakdown of undigested food -- especially sugar, starches, and fiber. Your body expels this gas through burps and farts. Everyone does it. In fact, when your body is healthy, it's normal to pass gas 14 to 23 times a day. Bloating can be caused by too much gas in the intestines, although you can also feel bloated and have a normal amount of gas.