Also, IGF-1 is not a reliable predictor of growth hormone deficiency, especially in TBI cases. My level was 292 ng/mL, and the deficient level is <209. Additionally, I solely had mild concussions without losing consciousness.

You either need a glucagon stim test or an insulin tolerance test to accurately get diagnosed.

For me, it was extremely hard to get an endocrinologist to perform the test on me. You should find and endo that has experience in TBI and hormones.

I believe hormone replacement therapy will eradicate my head sensitivity as the onset of my other symptoms coincides exactly with the head sensitivity. I will post updates on this in the future.

Utility of serum IGF-1 for diagnosis of growth hormone deficiency following traumatic brain injury and sport-related concussion
Post-Traumatic Hypopituitarism—Who Should Be Screened, When, and How?