The symptoms of diarrhea include bloating, abdominal cramps, abdominal pains, blood in the stool, loose and watery stool, and fever, states Mayo Clinic. In young children, diarrhea can swiftly cause dehydration. Therefore, it is prudent for the parent to call a doctor if the child's diarrhea continues for 24 hours.
The common causes of diarrhea include viruses, parasites and bacteria, surgery, lactose intolerance, artificial sweeteners, and other digestive disorders, notes Mayo Clinic. Medications, especially antibiotics, can also cause diarrhea. That is because they indiscriminately destroy both good and bad bacteria and thus disturb the natural balance of bacteria in a person's intestines.
The bacteria that commonly cause diarrhea include salmonella, Escherichia coli, shigella and campylobacter, reports Mayo Clinic. Drinking contaminated water or food is the most likely way to introduce the bacteria to the body.
A person can also experience diarrhea after going through abdominal surgery or gallbladder removal surgery, explains Mayo Clinic. In addition, conditions such as Crohn's disease, microscopic colitis, ulcerative colitis, celiac disease and irritable bowel syndrome can also cause diarrhea.
For adults, if diarrhea persists for two days in a patient, and he becomes dehydrated, develops severe abdominal or rectal pain, has bloody or black stools, and has a high fever, then it is important for the patient to see a doctor, advises Mayo Clinic.