Hi there ~
I understand your concerns. The tender head with stuttering
or stumbling with low memory and chronic back pain
with thinning of hair with dry skin
are all causes of chronic head trauma
due to having played with the baseball bat. I think that you need to visit with a neuropsychiatrist who can order a CT scan or another imaging study to find out the cause and treat you for the same. I hope this helps. Also a dermatologist
might help with the peeling skin and a psychiatrist with the mood swings.
I hope this helped and I wish you the very best. Take care!