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Let's see if we can figure out what's causing your fatigue.
Select additional symptoms and we'll narrow your results.

What causes fatigue? 251 possible conditions

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

81

Alcoholic Liver Disease

Damage to the liver from excessive drinking can lead to ALD. Years of alcohol abuse cause the liver to become inflamed and swollen. This damage can also cause scarring known as cirrhosis. Cirrhosis is the final stage o...

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82

Chemical Burns

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

Find information about chemical burns and how to prevent them. Learn about the causes, symptoms, and treatment of chemical burns.

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83

Epilepsy Overview

Epilepsy is a chronic disorder that causes unprovoked, recurrent seizures. Find out what causes it, who's at risk, how it's diagnosed, and more.

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84

Diabetic Ketoacidosis

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

Diabetic ketoacidosis (DKA) is a serious complication that stems from diabetes. If you don't have enough insulin to help your body process sugars (glucose), your body will start burning fat to fuel itself. As a result...

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85

Colitis

Colitis is inflammation of the colon. Read about the different types and associated symptoms.

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86

High Blood Pressure Overview

Hypertension, or high blood pressure, occurs when your blood pressure increases to unhealthy levels. Learn how to reduce your risk, note symptoms, and more.

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87

Endocarditis

Endocarditis, also known as infective endocarditis, is a condition in which your heart's inner lining is inflamed. Learn about causes and symptoms.

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88

Ulcerative Colitis

Ulcerative colitis is an inflammatory bowel disease. Learn about its causes, symptoms, and treatment options.

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89

Lyme Disease

Lyme disease is an infectious disease that's transmitted to humans through tick bites. Learn how Lyme disease is diagnosed and treated, and learn how to prevent tick bites.

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90

Atrial Fibrillation and Flutter

Atrial fibrillation and atrial flutter are irregular heart rhythms that occur when the upper chambers of your heart (the atria) beat too fast.Atrial fibrillation can be sustained or can occur in bursts. It creates a...

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91

Rhabdomyolysis

Rhabdomyolysis is a breakdown of muscle fibers that occurs due to muscle injury. Learn more about this condition.

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92

Stomach Ulcer

Stomach ulcers are painful sores in the stomach lining or small intestine. They occur when the mucus that protects the stomach from digestive juices is reduced.

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93

Getting a Handle on Aspiration Pneumonia

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

What's the difference between aspiration pneumonia and pneumonia? Learn the causes, symptoms, and risk factors for this condition.

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94

Goodpasture syndrome

Goodpasture syndrome is a rare condition that occurs when your immune system attacks the walls of your lungs and the tiny filtering units in your kidneys.

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95

Aase Syndrome

Aase syndrome is a condition characterized by several birth defects. For a child to be diagnosed with Aase syndrome, he or she must have a reduced number of red blood cells from birth and three bones in one or bot...

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96

Myasthenia Gravis

Myasthenia gravis is a neuromusclar disorder. It results in weakness of the skeletal muscles, and can cause double vision and drooping of the eyelid.

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97

Polycythemia Vera

Polycythemia vera is a bone marrow disorder in which the body produces too many red blood cells. Here's what you need to know about this rare condition.

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98

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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99

Respiratory Acidosis

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

Respiratory acidosis occurs when the lungs cannot remove enough of the CO2 produced by the body. It is typically caused by an underlying condition.

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100

Addisonian Crisis (Acute Adrenal Crisis)

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

An Addisonian crisis occurs when levels of cortisol suddenly drop. Learn more about an Addisonian crisis, including symptoms, risk factors, and treatment.

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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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