Chronic diarrhea differential diagnosis
|
Chronic diarrhea Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Omodamola Aje B.Sc, M.D. [2]
Overview
Differential diagnosis
It is important to differentiate chronic diarrhea based on the kind of diarrhea that is produced. Chronic diarrhea can be subdivided into three major types; watery, fatty, inflammatory. Watery chronic diarrhea can then further be sub-divided into osmotic or secretory diarrhea. Below is a list of differential Diagnosis of Chronic Diarrhea by Stool Characteristics.[1]
Watery
Secretory (often nocturnal; unrelated to food intake; fecal osmotic gap < 50 mOsm per kg*)
Alcoholism
Bacterial enterotoxins (e.g., cholera)
Bile acid malabsorption
Brainerd diarrhea (epidemic secretory diarrhea)
Congenital syndromes
Crohn disease (early ileocolitis)
Endocrine disorders (e.g., hyperthyroidism [increases motility])
Medications (see Table 3)
Microscopic colitis (lymphocytic and collagenous subtypes)
Neuroendocrine tumors (e.g., gastrinoma, vipoma, carcinoid tumors, mastocytosis)
Nonosmotic laxatives (e.g., senna, docusate sodium [Colace])
Postsurgical (e.g., cholecystectomy, gastrectomy, vagotomy, intestinal resection)
Vasculitis
Osmotic (fecal osmotic gap > 125 mOsm per kg*)
Carbohydrate malabsorption syndromes (e.g., lactose, fructose)
Celiac disease
Osmotic laxatives and antacids (e.g., magnesium, phosphate, sulfate)
Sugar alcohols (e.g., mannitol, sorbitol, xylitol)
Functional (distinguished from secretory types by hypermotility, smaller volumes, and improvement at night and with fasting)
Irritable bowel syndrome
Fatty (bloating and steatorrhea in many, but not all cases)
Malabsorption syndrome (damage to or loss of absorptive ability)
Amyloidosis
Carbohydrate malabsorption (e.g., lactose intolerance)
Celiac sprue (gluten enteropathy)–various clinical presentations
Gastric bypass
Lymphatic damage (e.g., congestive heart failure, some lymphomas)
Medications (e.g., orlistat [Xenical; inhibits fat absorption], acarbose [Precose; inhibits carbohydrate absorption])
Mesenteric ischemia
Noninvasive small bowel parasite (e.g., Giardia)
Postresection diarrhea
Short bowel syndrome
Small bowel bacterial overgrowth (> 105 bacteria per mL)
Tropical sprue
Whipple disease (Tropheryma whippelii infection)
Maldigestion (loss of digestive function)
Hepatobiliary disorders
Inadequate luminal bile acid
Loss of regulated gastric emptying
Pancreatic exocrine insufficiency
Inflammatory or exudative (elevated white blood cell count, occult or frank blood or pus)
Inflammatory bowel disease Crohn disease (ileal or early Crohn disease may be secretory)
Diverticulitis
Ulcerative colitis
Ulcerative jejunoileitis
Invasive infectious diseases
Clostridium difficile (pseudomembranous) colitis–antibiotic history
Invasive bacterial infections (e.g., tuberculosis, yersiniosis)
Invasive parasitic infections (e.g., Entamoeba)–travel history
Ulcerating viral infections (e.g., cytomegalovirus, herpes simplex virus)
Neoplasia
Colon carcinoma
Lymphoma
Villous adenocarcinoma
Radiation colitis
References
- ↑ Lacy, Brian E.; Mearin, Fermín; Chang, Lin; Chey, William D.; Lembo, Anthony J.; Simren, Magnus; Spiller, Robin (2016). "Bowel Disorders". Gastroenterology. 150 (6): 1393–1407.e5. doi:10.1053/j.gastro.2016.02.031. ISSN 0016-5085.