My dad had an accident 3 weeks ago. he got a muscle knot on his neck which pains alot. no amount of pain relievers or physical therapy has helped.help?

Whiplash injury: Muscle pain after whiplash can take a while to resolve. Make sure your doctor has cleared your cervical spine (bones in uour neck), then try to get the muscles moving right. Myofascial / massage can really help.

Get checked out: See a physician if you have not already. He should get it checked out with an x-ray or ct. Things should be better in three weeks.