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DiscussionWeaning off of prednisone & pain management
Polymyalgia Rheumatica (PMR) | Last Active: Oct 25 10:23am | Replies (156)Comment receiving replies
Replies to "My rheumy told me the adrenal gland starts making cortisol at around 8 to 10 in..."
"My rheumy told me the adrenal gland starts making cortisol at around 8 to 10 in the morning."
Actually the adrenals start producing more cortisol earlier at 3-4 a.m. in the morning. It is part of the circadian rhythm that begins the waking up process in the morning. Cortisol levels peak at 8-10 a.m in the morning and gradually reduce throughout the day assuming the day isn't too stressful.
https://www.sciencedirect.com/science/article/abs/pii/S0303720719303545#:~:text=The%20HPA%20axis%20exhibits%20pronounced,can%20lead%20to%20disease%20states.
Your rheumatologist is correct because there is a sharp increase in cortisol production after you wake up.
https://www.sciencedirect.com/topics/medicine-and-dentistry/cortisol-awakening-response
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People with PMR often complain of "early morning" pain and stiffness. The pain I had would wake me up at 3 a.m. in the morning. That is when cortisol levels are at their lowest. It makes sense that inflammation increases and causes pain because inflammation isn't being regulated well when cortisol levels are low. Pain was my cue to take some prednisone.
Some people survive the entire night and wake up in the morning at about 8 a.m. and take their prednisone. Regardless, prednisone still is our cortisol replacement. Unfortunately, oral dosing with prednisone is a poor substitute for everything that cortisol and the HPA axis does.
It is more about the HPA axis being disrupted by prednisone and not solely about adrenal insufficiency and low cortisol levels.