Diarrhea Differential Diagnoses
- Author: Stefano Guandalini, MD; Chief Editor: Carmen Cuffari, MD more...
Differential Diagnoses
- Appendicitis
- Carcinoid Tumor
- Congenital Microvillus Atrophy
- Crohn Disease
- Cystic Fibrosis
- Giardiasis
- Glucose-galactose malabsorption
- Hyperthyroidism
- Intestinal Enterokinase Deficiency
- Intestinal Protozoal Diseases
- Intussusception
- Irritable Bowel Syndrome
- Malabsorption Syndromes
- Meckel Diverticulum
- Protein Intolerance
- Shigella Infection
- Short Bowel Syndrome
- Ulcerative Colitis
Vernacchio L, Vezina RM, Mitchell AA, Lesko SM, Plaut AG, Acheson DW. Diarrhea in American infants and young children in the community setting: incidence, clinical presentation and microbiology. Pediatr Infect Dis J. Jan 2006;25(1):2-7. [Medline].
King CK, Glass R, Bresee JS, Duggan C. Managing acute gastroenteritis among children: oral rehydration, maintenance, and nutritional therapy. MMWR Recomm Rep. Nov 21 2003;52:1-16. [Medline].
Guarino A, Albano F, Ashkenazi S, et al. European Society for Paediatric Gastroenterology, Hepatology, and Nutrition/European Society for Paediatric Infectious Diseases evidence-based guidelines for the management of acute gastroenteritis in children in Europe: executive summary. J Pediatr Gastroenterol Nutr. May 2008;46(5):619-21. [Medline].
[Guideline] Atia AN, Buchman AL. Oral rehydration solutions in non-cholera diarrhea: a review. Am J Gastroenterol. Oct 2009;104(10):2596-604; quiz 2605. [Medline].
Guandalini S. Probiotics for children with diarrhea: an update. J Clin Gastroenterol. Jul 2008;42 Suppl 2:S53-7. [Medline].
Guandalini S. Probiotics for children with diarrhea: an update. J Clin Gastroenterol. Jul 2008;42 Suppl 2:S53-7. [Medline].
[Best Evidence] Ruiz-Palacios GM, Perez-Schael I, Velazquez FR, et al. Safety and efficacy of an attenuated vaccine against severe rotavirus gastroenteritis. N Engl J Med. Jan 5 2006;354(1):11-22. [Medline]. [Full Text].
Soares-Weiser K, MacLehose H, Bergman H, Ben-Aharon I, Nagpal S, Goldberg E, et al. Vaccines for preventing rotavirus diarrhoea: vaccines in use. Cochrane Database of Systematic Reviews. 2012.
Abubakar I, Aliyu SH, Arumugam C, Usman NK, Hunter PR. Treatment of cryptosporidiosis in immunocompromised individuals: systematic review and meta-analysis. Br J Clin Pharmacol. Apr 2007;63(4):387-93. [Medline].
Bellemare S, Hartling L, Wiebe N, et al. Oral rehydration versus intravenous therapy for treating dehydration due to gastroenteritis in children: a meta-analysis of randomised controlled trials. BMC Med. Apr 15 2004;2:11. [Medline]. [Full Text].
Bryce J, Boschi-Pinto C, Shibuya K, Black RE,. WHO estimates of the causes of death in children. Lancet. Mar 26-Apr 1 2005;365(9465):1147-52. [Medline].
Charles MD, Holman RC, Curns AT, et al. Hospitalizations associated with rotavirus gastroenteritis in the United States, 1993-2002. Pediatr Infect Dis J. Jun 2006;25(6):489-93. [Medline].
Coffin SE, Elser J, Marchant C, et al. Impact of acute rotavirus gastroenteritis on pediatric outpatient practices in the United States. Pediatr Infect Dis J. Jul 2006;25(7):584-9. [Medline].
Girard MP, Steele D, Chaignat CL, Kieny MP. A review of vaccine research and development: human enteric infections. Vaccine. Apr 5 2006;24(15):2732-50. [Medline].
Guandalini S. Treatment of acute diarrhea in the new millennium. J Pediatr Gastroenterol Nutr. May 2000;30(5):486-9. [Medline].
Guandalini S, Dincer AP. Nutritional management in diarrhoeal disease. Baillieres Clin Gastroenterol. Dec 1998;12(4):697-717. [Medline].
Guandalini S, Kahn S. Acute diarrhea. In: Walker A, Goulet O, Kleinman J, et al eds. Pediatric Gastrointestinal Disease. Vol 1. Ontario, Canada: Brian C. Decker; 2008:252-64/Chapter 15.
Sandhu BK, Isolauri E, Walker-Smith JA, et al. A multicentre study on behalf of the European Society of Paediatric Gastroenterology and Nutrition Working Group on Acute Diarrhoea. Early feeding in childhood gastroenteritis. J Pediatr Gastroenterol Nutr. May 1997;24(5):522-7. [Medline].
Sullivan PB. Nutritional management of acute diarrhea. Nutrition. Oct 1998;14(10):758-62. [Medline].
[Guideline] Walker-Smith JA, Sandhu BK, Isolauri E, et al. Guidelines prepared by the ESPGAN Working Group on Acute Diarrhoea. Recommendations for feeding in childhood gastroenteritis. European Society of Pediatric Gastroenterology and Nutrition. J Pediatr Gastroenterol Nutr. May 1997;24(5):619-20. [Medline].
| Stool Characteristics | Small Bowel | Large Bowel |
| Appearance | Watery | Mucoid and/or bloody |
| Volume | Large | Small |
| Frequency | Increased | Highly increased |
| Blood | Possibly positive but never gross blood | Commonly grossly bloody |
| pH | Possibly < 5.5 | >5.5 |
| Reducing substances | Possibly positive | Negative |
| WBCs | < 5/high power field | Commonly >10/high power field |
| Serum WBCs | Normal | Possible leukocytosis, bandemia |
| Organisms | Viral
| Invasive bacteria
|
Enterotoxigenic bacteria
| Toxic bacteria
| |
Parasites
| Parasites
|
| Organism | Incubation | Duration | Vomiting | Fever | Abdominal Pain |
| Rotavirus | 1-7 d | 4-8 d | Yes | Low | No |
| Adenovirus | 8-10 d | 5-12 d | Delayed | Low | No |
| Norovirus | 1-2 d | 2 d | Yes | No | No |
| Astrovirus | 1-2 d | 4-8 d | +/- | +/- | No |
| Calicivirus | 1-4 d | 4-8 d | Yes | +/- | No |
| Aeromonas species | None | 0-2 wk | +/- | +/- | No |
| Campylobacter species | 2-4 d | 5-7 d | No | Yes | Yes |
| C difficile | Variable | Variable | No | Few | Few |
| C perfringens | Minimal | 1 d | Mild | No | Yes |
| Enterohemorrhagic E coli | 1-8 d | 3-6 d | No | +/- | Yes |
| Enterotoxigenic E coli | 1-3 d | 3-5 d | Yes | Low | Yes |
| Plesiomonas species | None | 0-2 wk | +/- | +/- | +/- |
| Salmonella species | 0-3 d | 2-7 d | Yes | Yes | Yes |
| Shigella species | 0-2 d | 2-5 d | No | High | Yes |
| Vibrio species | 0-1 d | 5-7 d | Yes | No | Yes |
| Y enterocolitica | None | 1-46 d | Yes | Yes | Yes |
| Giardia species | 2 wk | 1+ wk | No | No | Yes |
| Cryptosporidium species | 5-21 d | Months | No | Low | Yes |
| Entamoeba species | 5-7 d | 1-2+ wk | No | Yes | No |
| Organism | Detection Method | Microbiologic Characteristics |
| Aeromonas species | Blood agar | Oxidase-positive flagellated gram-negative bacillus (GNB) |
| Campylobacter species | Skirrow agar | Rapidly motile curved gram-negative rod (GNR); Campylobacter jejuni 90% and Campylobacter coli 5% of infections |
| C difficile | Cycloserine-cefoxitin-fructose-egg (CCFE) agar; enzyme immunoassay (EIA) for toxin; latex agglutination (LA) for protein | Anaerobic spore-forming gram-positive rod (GPR); toxin-mediated diarrhea; produces pseudomembranous colitis |
| C perfringens | None available | Anaerobic spore-forming GPR; toxin-mediated diarrhea |
| E coli | MacConkey eosin-methylene blue (EMB) or Sorbitol-MacConkey (SM) agar | Lactose-producing GNR |
| Plesiomonas species | Blood agar | Oxidase-positive GNR |
| Salmonella species | Blood, MacConkey EMB, xylose-lysine-deoxycholate (XLD), or Hektoen enteric (HE) agar | Nonlactose non–H2S-producing GNR |

