What Fatigue Is And Is Not

Fatigue is a subjective condition for which there is no test.

When we get tired, our bodies need to rest. Generally, after a rest such as a good night's sleep, we feel refreshed.

With fatigue, you can get a good night's sleep and still wake up feeling exhausted. The feeling of exhaustion does not relate to physical activity or emotional stress.

Fatigue frequently includes the following:

• You lack the strength to do the everyday things you used to do.
• You feel weak and tired more quickly than usual.
• You feel dizzy after walking short distances or climbing stairs.
• Simple tasks leave you short-of-breath.
• You experience feelings of sadness, frustration, irritability or hopelessness.
• A diminished interest in life.
• You find it difficult to concentrate or focus your attention. ("Attentional fatigue.")

Fatigue does not have set patterns. It is dynamic. Fatigue waxes and wanes over time -- perhaps even on a daily basis.

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