Hi,
You can have definite evidence if there are still shards of glass left through imaging techniques such as x-ray or CT scan. However, post traumatic injury may also result to headaches even after a few years of the car accident. If it persists, have this evaluated furtehr for proper management. Over-the-counter pain medications may also help.
Take care and keep us posted.
I am going through a similar incident and no one believes me and thinks I am crazy. I got in a car accident, where a 18 wheeler truck hit my car and glass was embedded in my head. Every once and while I get lesions on my head and feel glass. Please tell me more.
mg1998010