While it's common to crave more energy in our day-to-day lives, life-altering fatigue is not a normal state. If you are concerned that your lack of vitality may be signaling a severe condition such as chronic fatigue syndrome (CFS), check the list below and determine if you need to consult your health care practitioner.
In addition to six or more months of debilitating fatigue, four or more of the following symptoms may signal a problem:
Typically, CFS comes on quickly, often following a flulike illness. Other symptoms may include muscle weakness, visual disturbances, dizziness, depression, irritability and anxiety.