Diarrhea
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Diarrhea (in American English) or diarrhoea (in British English) is a condition in which the sufferer has frequent watery, loose bowel movements.
Many things can cause diarrhea, which can make diagnosis complex. Acute diarrhea is usually related to a bacterial, viral, or parasitic infection. Chronic diarrhea is usually related to functional disorders such as irritable bowel syndrome or inflammatory bowel disease.
- Bacterial infections. Several types of bacteria consumed through contaminated food or water can cause diarrhea. Common culprits include Campylobacter, Salmonella, Shigella, and Escherichia coli (E. coli).
- Viral infections. Many viruses cause diarrhea, including rotavirus, Norwalk virus, cytomegalovirus, herpes simplex virus, and viral hepatitis.
- Food intolerances. Some people are unable to digest food components such as artificial sweeteners and lactose—the sugar found in milk.
- Parasites. Parasites can enter the body through food or water and settle in the digestive system. Parasites that cause diarrhea include Giardia lamblia, Entamoeba histolytica, and Cryptosporidium.
- Reaction to medicines. Antibiotics, blood pressure medications, cancer drugs, and antacids containing magnesium can all cause diarrhea.
- Intestinal diseases. Inflammatory bowel disease, colitis, Crohn’s disease, and celiac disease often lead to diarrhea.
- Functional bowel disorders. Diarrhea can be a symptom of irritable bowel syndrome.
The Complete List of Causes of Diarrhea
- Lactose intolerance
- Pancreatic disease
- Short-bowel syndrome
- Postgastrectomy syndrome
- Hyperthyroidism
- Cholestasis
- Celiac disease (gluten intolerance)
- Other malabsorption syndromes
- Inflammatory bowel disease
- Infectious diseases
- Viral Infection
- Bacterial Infection
- Salmonella
- Shigella
- Campylobacter
- Vibrio cholerae
- Entero-Aggregative Escherichia coli
- Entero-Toxic Escherichia coli
- Yersinia enterocolitica
- Vibrio parahemolyticus
- Protozoal Infection
- Multicellular Parasitic Diseases
- Ascaris
- Trichuris
- Strongyloides
- Filariasis
- Toxocara
- Echinococcosis
- Cysticercosis
- Tapeworms
- Trematoda - Intestinal, lung, liver flukes
- Schistosoma
- Hookworm, pinworm
- Fungal Diseases
- Ischemic colitis
- Radiation colitis
- Neoplasia
- Secretory diarrhea
- Irritable bowel syndrome
- Laxative abuse
- Congenital syndromes (chloridorrhea)
- Bacterial toxins
- Drugs and poisons
- Neuroendocrine tumors
- Neoplasia
- Addison's disease
- Epidemic secretory Brainerd diarrhea
* Abdominal abscess * Abdominal Cancer * Achlorhydria * Acquired angioedema * Acquired angioedema, type 1 * Acquired angioedema, type 2 * Acrodermatitis Enteropathica * Acrodynia * Acute Appendicitis * Acute Gastritis * Acute kidney failure * Acute Renal Failure * Acute tin poisoning * Acute zinc toxicity * Addison's Disease * Adenophorea Infections * Adenoviridae Infections * Adenovirus infection in immunocompromised patients * Adrenal hyperplasia, congenital type 3 * Adverse reaction * AIDS * AIDS-Related Complex * Alcohol Withdrawal * Alcohol-Induced Disorders * Alcoholic intoxication * Allergic Disorders * Allergies * Amebiasis * Amoebiasis * Amyloidosis * Amyloidosis AL * Anaphylaxis * Ancylostoma duodenale * Anguillulosis * Anxiety-tension syndrome * Aromatic amino acid decarboxylase deficiency * Arsenic poisoning * Aspartylglycosaminuria * Astrovirus * Athabaskan severe combined immunodeficiency * Attenuated familial polyposis * Autoimmune diseases * Autoimmune enteropathy * Baber's syndrome * Bacterial digestive infections * Bacterial toxic-shock syndrome * Banti's syndrome * Bartter's syndrome, antenatal type 1 * Bartters syndrome, antenatal , type 2 * Behcet's Disease * Biliary Atresia * Biliary tract cancer * Biotinidase deficiency * Blastocystis hominis * Blind loop syndrome * Boron overuse * Botulism food poisoning * Bowel conditions * Brainerd diarrhea * Brennemann's syndrome * Brown-Symmers disease * Carbamate insecticide poisoning * Carcinoid syndrome * Carnitine overuse * Celiac Disease * Cephalothoracic progressive lipodystrophy * Chemical pneumonia * Chromosome 16q, partial deletion * Chronic Fatigue Syndrome * Chronic Granulomatous Disease * Chronic Myeloproliferative Disorders * Chronic vitamin A toxicity * Ciguatera poisoning * Classic galactosemia * Clostridium perfringens food poisoning * Clostridium sordellii * Colchicine toxicity * Colitis * Colonic Inertia * Colonic malakoplakia * Colorectal cancer * Colorectal Polyps * Common migraine * Common Variable Immunodeficiency * Congenital adrenal hyperplasia - sodium-wasting form * Congenital disorder of glycosylation type 1B * Congenital short bowel * Congenital sucrose-isomaltose malabsorption * Congenital Toxoplasmosis * Constipation * Copper toxicity * Cornelia de Lange syndrome 2 * Cree leukoencephalopathy * Crohn's disease * Cronkhite-Canada disease * Cryptosporiosis * Cutaneous mastocytosis * Cutaneous photosensitivity colitis, lethal * Cyclic vomiting syndrome * Cyclosporine toxicity * Cytomegalic Inclusion Body Disease * Darvocet withdrawal * Deal-Barratt-Dillon syndrome * Degos Disease * Diabetes Insipidus * Diabetic neuropathy * Diarrhea - polyendocrinopathy - infections, X-linked * Diarrheagenic Escherichia coli * Dibasic aminoaciduria 2 * Dientamoeba fragilis * Diffuse systemic sclerosi * Digestive Diseases * Digestive duplication * Digestive system cancer * Dilaudid withdrawal * Dipylidium * Dipylidium caninum infection * Disseminated infection with mycobacterium avium complex * Dissociative disorder * Distomatosis * Diverticular Disease * Dracunculiasis * Dressler (D.)syndrome * Ebola * EGE * Egg Hypersensitivity * Ehrlichiosis * End Stage Liver Failure * Endometriosis * Entamoeba histolytica * Enteritis * Enterocele * Enterocolitis * Enterohemorrhagic Escherichia Coli Infection * Enterovirus antenatal infection * Envenomization by the Martinique lancehead viper * Eosinophilic enteropathy, pattern II * Erythroderma desquamativa of Leiner * Escherichia coli O157:H7 * Evening Primrose oil - adverse effects * Familial amyloid polyneuropathy * Familial polyposis - classical * Familial polyposis, autosomal recessive * Familial visceral myopathy * Fanconi-ichthyosis-dysmorphism * Fascioliasis * Fasciolopsiasis * Favism * Fecal impaction * Fecal incontinence * Fever * Flavivirus * Fluke infections * Folic acid toxicity * Food allergies * Food intolerances * Food poisoning * Functioning pancreatic endocrine tumor * Galactosemia * Galactosemia I * Galactosemia III * Gardner syndrome * Gastrinoma * Gastritis * Gastritis, familial giant hypertrophic * Gastro-enteropancreatic neuroendocrine tumor * Gastroenteritis * Gastrointestinal amyloidosis * Gastrointestinal neoplasm * Ginseng overuse * Glanders * Glucosamine - adverse effects * Glucose-galactose malabsorption * Glutathione Synthetase Deficiency * Glénard syndrome * Gnathostoma Infection * Graft-versus-host disease - acute * Groin Hernia * Hantavirosis * Hantavirus * Headache-free migraine * Helminth infections * Helminthiasis * Hemolytic uremic syndrome * Hemophagocytic lymphohistiocytosis, familial, 1 * Hemophagocytic lymphohistiocytosis, familial, 2 * Hemophagocytic lymphohistiocytosis, familial, 3 * Hemophagocytic lymphohistiocytosis, familial, 4 * Hemorragic fever with renal syndrome * Hepatitis * Hepatitis A * Hepatitis B * Hepatitis C * Hepatitis D * Hepatitis E * Hepatitis X * Hepatorenal tyrosinemia * Hereditary amyloidosis * Hereditary angioedema, type 1 * Hereditary angioedema, type 2 * Hereditary angioedema, type III * Hereditary pancreatitis * Heroin dependence * Heroin withdrawal * Heterophyiasis * Hirschsprung's disease * HIV/AIDS * Hookworm * Human granulocytic ehrlichiosis * Human monocytic ehrlichiosis * Hydrocodone withdrawal * Hymenolepiasis * Hyper IgM syndrome 1 * Hyper IgM syndrome 3 * Hyper IgM syndrome 4 * Hyper-IgD syndrome * Hyper-IgM Syndrome * Hyperimmunoglobinemia D with recurrent fever * Hyperinsulinemic hypoglycemia, familial, 1 * Hyperinsulinemic hypoglycemia, familial, 2 * Hyperthyroidism * Hypoadrenocorticism - hypoparathyroidism - moniliasis * Idiopathic hypereosinophilic syndrome * Idiopathic intestinal pseudoobstruction * Idiopathic sclerosing mesenteritis * Immunoglobulinic amyloidosis * Immunoproliferative diseases * Inborn amino acid metabolism disorder * Incontinence * Inflammatory bowel disease * Insect parasite conditions * Insect sting allergies * Intestinal Conditions * Intestinal Flu * Intestinal lymphangiectasis * Intestinal pseudoobstruction chronic idiopathic * Intrinsic factor, congenital deficiency of * Invasive group A Streptococcal disease * Iron poisoning * Irritable bowel syndrome * Isosporiasis * Isosporosiasis * Juvenile polyposis of infancy * Juvenile polyposis syndrome, infantile form * Katayama fever * Keratosis palmoplantaris - adenocarcinoma of the colon * Lactose Intolerance * Lassa fever * Legionnaires' disease * Leiner Disease * Leptospirosis * Leukocytoclastic angiitis - systemic * Levy-Yeboa Syndrome * Lipoid congenital adrenal hyperplasia * Listeriosis * Liver conditions * Lortab withdrawal * Lymphangiectasies and lymphedema Hennekam type * Lymphangiectasis * Lymphomatoid Granulomatosis * Malabsorption * Malonic aciduria * Marburg virus * Mastocytosis * Megaloblastic anemia * Melioidosis * Meningitis * Mercury poisoning * Mesothelioma, adult malignant * Mesothelioma, adult malignant - peritoneal * Metabolic disorders * Metagonimiasis * Methionine malabsorption syndrome * Methotrexate toxicity * Middle ear infection * Mitochondrial neurogastrointestinal encephalopathy syndrome * Mixed connective tissue disease * Morphine withdrawal * Mucoepithelial dysplasia, Witkop type * Multiple endocrine neoplasia type 1 * Mycobacterium avium Complex * Mycobacterium avium complex infection * Myiasis * Ménétrier's disease * Neonatal bacterial meningitis * Neonatal sepsis * Neuroblastoma * Neurofibromatosis, familial intestinal * Nezelof's syndrome * Norwalk gastroenteritis * Norwalk-like viruses * Obal syndrome * Obstructive Jaundice * Ogilvie's syndrome * OHSS * Omenn syndrome * Opioid withdrawal * Opisthorchiasis * Opium withdrawal * Ovarian Cancer * OxyContin withdrawal * Pancreatic adenoma * Paragonimiases - lung infection * Paragonimiasis * Paraneoplastic Autoimmune Syndromes * Peanut allergies * Peanut Allergy * Pellagra * Pelvic abscess * Penicillin allergy * Periodic hyperlysinemia * Pernicious anemia * Phenol sulfotransferase deficiency * Plant poisoning - Angel's trumpet (D. suaveolans) * Plant poisoning - Castor bean (Ricinus communis) * Plant poisoning - daffodil (Narcissus pseudonarcissus) * Plant poisoning - holly (Ilex sp.) * Plant poisoning - Jimsonweed (Datura stramonium) * Plant poisoning - mistletoe (Phoradendron serotinum) * Plant poisoning - pokeweed (Phytolacca Americana) * Plant poisoning - potato (Solanum tuberosum) * Plant poisoning - Rosary pea (Abrus precatorious) * Plant poisoning - Water hemlock (Cicuta sp.) * Poisoning * Pollen allergy * Portal thrombosis * Portal vein thrombosis * Portuguese type amyloidosis * Postoperative Abdominal Wound Dehiscence * Powell-Buist-Stenzel syndrome * Primary agammaglobulinemia * Primary immunodeficiency disorders * Primary tubular proximal acidosis * Protozoan Conditions * Proximal Renal Tubular Acidosis * Proximal tubulopathy - diabetes mellitus - cerebellar ataxia * Psyllium - adverse effects * Ptomaine food poisoning * Q fever * Radiation sickness * Rambaud-Galian syndrome * Rapid gastric emptying * Rectal cancer * Rectal conditions * Refsum disease, infantile form * Reiter’s syndrome * Rhabditida Infections * Ritter syndrome * Rocky Mountain spotted fever * Rotavirus * Roundworm * Sakamoto disease * Salmonella enteritidis * Salmonella food poisoning * Sarcosporidiosis * SARS * Schistosomiasis * SCID * Sclerosing Mesenteritis * Scombrotoxic fish poisoning * Secernentea Infections * Selenium - overuse * Serotonin Syndrome * Severe combined immunodeficiency, T- B+ due to JAK3 deficiency * Severe congenital neutropenia * Shigellosis * Short Bowel Syndrome * Sickle cell crisis * Smith disease * Smoking stools syndrome * Spencer disease * Sphingolipidosis * Spira syndrome * Spirurida Infections * Spleen Cancer * Spondyloepiphyseal dysplasia - nephrotic syndrome * Sprue * St. Anthony's fire * Stachybotrys chartarum * Staphylococcal food poisoning * Staphylococcal infection * Staphylococcal toxic shock syndrome * Staphylococcus aureus food poisoning * Stomach cancer * Stomach Conditions * Streptococcal Infections * Strongyloidiasis * Subacute myelo-optico neuropathy syndrome * Subacute Thyroiditis * Substance Withdrawal Syndrome * Sudden Digestive Conditions * Thymus Cancer * Thymus disorders * Thyroid cancer, familial medullary * Toxemia * Toxic epidermal necrolysis * Toxic Shock Syndrome * Traveler's diarrhea * Trichinosis * Tularemia * Turcot syndrome * Typhoid fever * Ultram withdrawal * Valinemia * Vanadium - adverse effect * Vancomycin resistant enterococcal bacteremia * Vasculitis hypersensitivity * Venezuelan equine encephalitis * Vibrio * Vibrio Infections * Vibrio mimicus food poisoning * Vibrio vulnificus * Vibrio vulnificus infection * Vicodin withdrawal * Vipoma * Viral digestive infections * Viral Hemorrhagic Fevers * Viral Hepatitis * Viral meningitis * Visceral myopathy familial external ophthalmoplegia * Visceral neuropathy, familial, autosomal dominant * Vitamin C toxicity * Vitamin D - adverse effects * Von Gierke disease IB * Waldmann disease * Water-skier colon * Waterhouse-Friederichsen syndrome * Weil's syndrome * West nile encephalitis * West Nile fever * Western equine encephalitis * Wheat intolerance * Whipple's Disease * Whipworm * Whole-body acute irradiation - gastrointestinal syndrome * Whooping Cough * Wolman disease * Worm conditions * X-linked agammaglobulinaemia * Yellow fever * Yersinia pseudotuberculosis * Yersiniosis * Yorifuji Okuno syndrome * ZAP70 deficiency * Zinc deficiency * Zollinger-Ellison syndrome