I think the issue is that some PCS is pituitary related. And in some cases, the pituitary gets better or recovers some of its normal function. Since the pituitary is controlled by the brain, the pituitary dysfunction can be from damaged signaling from the brain or a damaged pituitary.

If you were to read up on the signaling mechanisms, you will learn that they are very sensitive chemical processes. The toxins left in the brain after a concussion can throw off many different signaling mechanisms. That is why PCS subjects do best when they control the foods they consume and focus on properly feeding the brain. Limiting stress is also important because the stress hormones and stress toxins make these signaling systems go sideways fast.

This is a futile question until you get blood work completed. Then you will have more information to use in the equation.