“I have spontaneously gained the ability to move my ears?”

I am a 30 year old female, disabled veteran. I have a history of mTBI (2010) and PTSD (2011) caused my MST. I am overweight but overall healthy with no diseases or infections. I have had left side hemiparesis that I consider to be very mild and I have an unusual gait. My memory is poor but my cognitive functioning is not bad enough to cause too many problems, although with my combined issues I am considered 100% disabled and can not work. I receive regular treatment for my diagnoses and take all medications prescribed to me. However recently, and randomly, my ears have begun to move. I have never been able to move my ears before. It started out as a response to hearing sounds, now it happens when I glance around or focus on things in my vision.

I do have intense anxiety in public or social situations, and it does feel like a physical symptom of hypervigilance but I am not sure. It feels like a lopsided headband around my skull, particularly the left side of my head just above my ear. Sometimes it tenses so hard it becomes painful as if it is strained. What could cause this sudden change and does it suggest a neurological change that I should be concerned about?