Factors contributing to chronic fatigue after traumatic brain injury.

So where is the similar study for stroke? Everyone I know complains about fatigue and sleep does not help. Ask your doctor where that study is or have them start up the study themselves.
http://www.ncbi.nlm.nih.gov/pubmed/22190008

Abstract

BACKGROUND:

: The annual incidence of traumatic brain injury in Europe amounts to 235 per 100 000 persons. About two-thirds will develop posttraumatic brain injury chronic fatigue (pTBI-CF).

AIM:

: To identify the reversible hormonal and nonhormonal causes of pTBI-CF.

PATIENTS AND METHODS:

: Ninety patients with varying degrees of pTBI-CF underwent endocrine testing and an evaluation of sleep, attention, coping style, daily activity and dependency, physical performance, emotional well-being, and quality of life.

RESULTS:

: Vitamin D deficiency was found in 65%, poor sleep quality in 54%, anxiety disorders in 36%, growth hormone deficiency in 16%, and gonadal hormone deficiencies in 9%. Fatigue severity was correlated with poor sleep (R = +0.65, P less than .0001), serum 25-hydroxy vitamin D levels (R = -0.50, P less than  .0001), and anxiety (R = +0.50, P less than .0001) but not with growth hormone deficiency or gonadal hormone deficiencies. The first 3 factors together explained 59% of the fatigue score variance.

CONCLUSIONS:

: Poor sleep, vitamin D deficiency, and anxiety were the most important factors associated with pTBI-CF. Appropriate treatment of these disorders may help to reduce fatigue in these patients.