Hypothalamo-pituitary-adrenal axis dysfunction in chronic fatigue syndrome, and the effects of low-dose hydrocortisone therapy.
Cleare, A J, Miell, J, Heap, E et al.·The Journal of clinical endocrinology and metabolism·2001
This study examined whether ME/CFS patients have problems with their stress hormone system (called the HPA axis) and whether a low dose of the steroid hormone hydrocortisone could help. Researchers found that ME/CFS patients had lower levels of cortisol (a stress hormone) in their urine and a reduced response to certain hormone challenges, suggesting their adrenal glands may not be producing enough cortisol. When some patients received hydrocortisone treatment, their fatigue improved and their hormone responses normalized.