Diarrhea | Symptom Checker
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What causes diarrhea? 87 possible conditions

See a list of possible causes in order from the most common to the least.

61

Marine Animal Bites or Stings

This condition is considered a medical emergency. Urgent care may be required.

Many marine animals bite or sting. Some deliver venom through their teeth, tentacles, spines, or skin. Others, such as sharks, aren't venomous but can inflict serious bites with their large, sharp teeth. Most creature...

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62

Addison’s Disease

Addison's disease occurs when the adrenal cortex is damaged and the adrenal glands do not produce enough of the steroid hormones cortisol and aldosterone.

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63

Hirschsprung Disease

Hirschsprung disease is a blockage that occurs in the colon in about one of every 5,000 births. The cause is unknown, but tends to affect more boys and those with Down syndrome or another inherited condition.

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64

Polio

Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system. It is most likely to be contracted by children under five years old.

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65

Trichinosis

Trichinosis is a disease caused by a roundworm infection. Learn about its symptoms, diagnosis, treatment, and how to prevent it.

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66

The Plague

The plague is a serious bacterial infection that can be deadly. It's caused by poor sanitation, overcrowding, and large rodent populations.

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67

Weils Disease

Weil's disease is a severe form of the bacterial infection leptospirosis, which can lead to organ failure and bleeding. Symptoms include nausea, fever, headache, and jaundice.

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68

West Nile Virus Infection (West Nile Fever)

A mosquito bite can turn into something much more severe if you are infected with West Nile virus. Mosquitoes transmit this virus after they bite an infected bird and then bite a person. While not all people wit...

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69

Leishmaniasis

Leishmaniasis is a parasitic disease caused by the Leishmania parasite found in sand flies.

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70

Autonomic Neuropathy

Damage to the nerves that help your organs to function can cause a condition called autonomic neuropathy (AN) and is associated with other conditions.

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71

Accidental Poisoning by Soap Products

This condition is considered a medical emergency. Urgent care may be required.

Accidentally swallowing or inhaling soap products can cause you to experience life-threatening symptoms.

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72

All About Autonomic Dysrelexia (or Hyperreflexia)

Autonomic dysreflexia (AD) is a condition in which your involuntary nervous system overreacts to stimuli. It's also known as autonomic hyperreflexia.

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73

Encopresis

Encopresis is when a child over the age of 4 has a bowel movement and soils their pants. They can't control this. It may have physical and psychological causes.

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74

Ascariasis

Roundworms are a type of parasitic worm. Infections caused by roundworms are relatively common. Ascariasis is the most common roundworm infection.

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75

Q Fever

Q fever is an infection caused by the bacteria Coxiella burnetii. The bacteria are most commonly found in cattle, sheep, and goats.

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76

Acute Appendicitis

Acute appendicitis is a painful inflammation of your appendix, a small sac connected to your large intestine. It is an urgent condition that must be addressed immediately. If you have appendicitis, your appendi...

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77

Lupus

Lupus is an autoimmune disease. Learn about the symptoms, causes, and treatment options.

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78

Kawasaki Disease

Kawasaki disease is a rare but serious illness that causes heart problems in children. It is a form of a condition called vasculitis (inflammation of the blood vessels). The blood vessels include arteries, veins, an...

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79

Pyogenic Liver Abscess

A pyogenic liver abscess (PLA) is a pocket of pus in the liver. It can be life-threatening. Find out the causes and symptoms of PLA and how it's treated.

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80

Intussusception

Most common in boys, intussusception occurs when a portion of the intestines become enfolded, causing a blockage. Symptoms include abdominal pain, vomiting, bloody stools, and others. It is potentially life-threatening.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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