When you have diarrhea, it’s common that your bowel movements get loose and watery. A common condition, many people suffer from diarrhea a few times a year. Bacteria is the main cause of diarrhea, and can lead to severe dehydration if not appropriately treated. Diarrhea can happen for various reasons, and typically goes away within one or three days. When you suffer from diarrhea, you may be compelled to run to the bathroom quickly with urgency more frequently than normal. You also may feel bloated due to lower abdominal cramping, and suffer from nausea. Diarrhea can cause dehydration when your body loses too much water and electrolytes. Potassium and magnesium play a vital role in bodily functions. Dehydration can sometimes lead to kidney failure, mainly when blood or fluid is not supplied to the kidneys. It would help to drink fluids to replace what you have lost when dealing with diarrhea.