What causes fatigue and tired? 168 possible conditions

Viewing 1 - 20 of 168 results

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

1

Sleeplessness

Insomnia is a serious sleep disorder. It can mean the inability to fall asleep or stay asleep throughout the night, or the tendency to wake too early before having gotten enough sleep. Insomnia is often used to describ...

Read more »

2

Common Cold Overview

The common cold is a virus that involves symptoms like sneezing, a runny nose and a headache. Learn the causes, symptoms and treatments for the common cold now!

Read more »

3

Anxiety

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.

Read more »

4

Cold and Flu Overview

Overview Colds (common colds) and the flu (influenza) are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Colds typically are confined to th...

Read more »

5

CFS (Chronic Fatigue Syndrome)

Chronic fatigue syndrome (CFS) is a debilitating disorder characterized by intense fatigue that cannot be cured with sleep. Mental and physical activities may cause symptoms to worsen. When fatigue cannot be linked to ...

Read more »

6

AIDS

HIV causes progressive failure of the immune system, making the body far more susceptible to infections and cancer.

Read more »

7

Dehydration

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

Dehydration occurs when you lose more fluid than you drink. The most common cause of water loss from the body is excessive sweating. Headaches, dizziness, and decreased urination are symptoms.

Read more »

8

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...

Read more »

9

Infectious Mononucleosis

Infectious mononucleosis, or "mono," is a group of symptoms caused by the Epstein-Barr virus. One potential symptom is a pink rash that looks like the measles.

Read more »

10

Anemia

Anemia occurs when the number of healthy red blood cells (RBCs) in the body is too low. Red cells carry oxygen to all the body's tissues, so a low red blood cell count indicates that the amount of oxygen in the blood i...

Read more »

11

Hypothyroidism

The thyroid gland is an important endocrine gland that controls the body's metabolism. It is a small butterfly-shaped gland located in the front of the neck just below the Adam's apple. The thyroid gland produces th...

Read more »

12

Congestive Heart Failure (CHF)

Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. You have four heart chambers: two atria in the upper half of the heart and two ventricles in the lower half. Th...

Read more »

13

Iron Deficiency Anemia

Anemia occurs when a person has lower-than-normal levels of red blood cells (RBCs) in the blood. According to the American Society of Hematology, there are many factors that can contribute to lower-than-normal RB...

Read more »

14

Generalized Anxiety Disorder

People who suffer from generalized anxiety disorder, or GAD, worry uncontrollably about common occurrences and situations. The condition may also be called chronic anxiety neurosis.GAD is different than normal feeling...

Read more »

15

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...

Read more »

16

Emphysema

Emphysema is a disease of the lungs. It occurs most often in smokers. It also occurs in people who regularly breathe in irritants.

Read more »

17

Obesity

Obesity is an epidemic in the U.S. This condition is putting people at a higher risk for serious diseases, such as type 2 diabetes, heart disease, and cancer. According to the Centers for Disease Control and Preventio...

Read more »

18

Bladder Infection

A bladder infection, also called cystitis, is a bacterial infection in the bladder. Some people call a bladder infection a urinary tract infection, or UTI, which refers to a bacterial infection anywhere in th...

Read more »

19

What is Fibromyalgia?

Fibromyalgia is a chronic disorder characterized by unexplained pain in muscles and joints throughout the body. Read our doctor-reviewed articles and learn about fibromyalgia now.

Read more »

20

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."

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
  • Page 1 of 9
Advertisement
Are you experiencing other symptoms?

I'm experiencing:

Choose from list of symptoms:

Advertisement