I do not know the circumstances of your injury. I had a traumatic head injury from a car in 89 while riding my bike. I almost went mad from so many things stemming from it. Not the least was the psychological aspects. PTSD can stem from such an injury. It is traumatizing simply put. Some of what you described fits the bill. These things don’t go away over night…or in 2 or 3 months. I lived with the effects of mine for at least 2 yrs…and that was simply the physical. But then again, I believe PTSD to be physical as well. You could benefit from some self soothing exercises. I suspect these triggers will be here for a long time to come. And I pray you seek some counseling to ease your stress from this. I did not and that was a mistake…unfortunately it wasn’t suggested. You are in my prayers on this one. I still have sensory flashbacks