What treatment to ask for to relax muscles? possible neurological condition possible brith injury hypothetically it is one of the possible, what should i ask for?

You give the treating doctor a good history and symptom list, have a thorough exam and let them decide what if anything you need. Further evaluation with some testing may be required. After all the information is in and reviewed, they can decide what treatments may help. Consider writing down your full story and ideas so you don't forget anything important & take that to the visit.

Agree with the advice provided by Dr. Ferguson. It is not feasible here, based upon your post, to pin down the significance of your muscle concerns, and best to be examined thoroughly, with appropriate testing and referrals if necessitated.