The role of the healthcare provider is to figure out the cause of fatigue. This is done by taking a complete history and doing a physical exam. In some cases, further tests may need to be done. This often involves blood tests, such as a CBC or complete blood count, but it may also include other tests based on the suspected condition. For example, a chest x-ray may be done if lung disease is thought to be the cause.
Fatigue can seriously limit a person's ability to work, go to school, and maintain relationships.
Severely affected people may need to rest for most of the day. People with chronic fatigue often become frustrated because of the lack of effective treatment for this condition. Other long-term effects depend on the underlying condition. Fatigue itself is not contagious and poses no risk to others. However, fatigue may sometimes be caused by infections that are contagious.