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What causes fatigue and increased appetite? 13 possible conditions

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


Low Blood Sugar (Hypoglycemia)

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

Also known as hypoglycemia, low blood sugar can be a dangerous condition. Hypoglycemia is rare in people who are not suffering from diabetes, the chronic disease that affects the body's ability to regulate blood sugar...

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There are many symptoms of the autoimmune disease HIV/AIDS, including persistent skin rashes, night sweats, and mouth sores.

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What is anxiety? Anxiety often manifests itself as an apprehension about daily life. Learn the basics with this overview of the types of anxiety disorders.

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Seasonal Affective Disorder

Seasonal affective disorder (SAD) is a form of depression. People affected by SAD display symptoms of depression at the same time every year, typically during the fall and winter months. According to the America...

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Bleeding or spotting, increased need to urinate, tender breasts, fatigue, nausea, and missed period are signs of pregnancy.

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Diabetes Overview

Diabetes is a group of chronic metabolic diseases caused by defects in insulin production or function. Advanced diabetes may cause stomach pain, nausea, dizziness, and cramps.

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Type 2 Diabetes Overview

Type 2 diabetes is a common chronic metabolic disease that leads to abnormally high levels of blood sugar in the blood. This blood sugar is also referred to as glucose.

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Postpartum Depression

Postpartum depression affects as many as 13 percent of new mothers. In the U.S., that's half a million women. Learn about symptoms, causes, risks, and more.

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Graves' Disease

Graves disease is an autoimmune disorder that leads to hyperthyroidism and causes thyroid swelling.

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The thyroid gland produces a hormone that controls how your cells use energy. Hyperthyroidism occurs when the body produces excessive amounts.

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Gestational Diabetes

During pregnancy, some women develop high levels of blood sugar, a condition known as gestational diabetes, around the 24th week of pregnancy. In most cases, the condition develops in women who never had diabetes.

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Type 1 Diabetes

Type 1 diabetes is a chronic disease that result high levels of glucose in the blood due to a lack of insulin production. Glucose is a natural sugar that your body uses as a source of energy.

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Cystic Fibrosis

Cystic fibrosis is a recessive genetic disorder that affects cells that produce mucous, sweat, and digestive juices. It may cause severe problems in the lungs, pancreas, liver, and intestine

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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.