Fatigue is a feeling of tiredness, exhaustion, or lack of energy. It differs from drowsiness, which is characterised by a desire or need to sleep. Fatigue can be a normal and important response to physical exertion, emotional stress, boredom, or lack of sleep. However, it can also be a symptom of a more serious mental or physical condition. When fatigue is not relieved by adequate sleep, a healthy diet, or a low-stress environment, it should be evaluated by your doctor.
If you are experiencing fatigue, you may want to learn more about the symptoms that often accompany fatigue, the various causes of fatigue, as well as how this condition is diagnosed. This section also provides advice and information on strategies and tips that help you boost your energy.
It is important to remember that fatigue itself is a symptom, characterised by a feeling of weariness, tiredness or lack of energy. Fatigue, however, can cause a vast range of other physical, mental and emotional symptoms including:
Generally, most cases of fatigue may be attributed to three areas: lifestyle factors, medical conditions or psychological problems. Fatigue can also be caused by a number of these factors working together.
Fatigue can be caused by medical conditions or underlying illnesses, such as:
When fatigue is not relieved by enough sleep, good nutrition, or a low-stress environment, it should be evaluated by your doctor.
Since fatigue can be accompanied with a wide range of other symptoms and may be caused by different factors, diagnosis can be difficult. Your doctor uses a number of tests to diagnose fatigue including:
Most of the time, fatigue can be traced to one or more of your habits or routines. Feeling more energetic can be as simple as changing one small detail in your life. Studies show that when you feel energetic, you feel much better about yourself. Here are some tips for reducing fatigue and boosting your energy: