Suggest Remedy For Severe Head Pain
Cervical muscles are the most probable reason of the pain.
Detailed Answer:
Hello!
Thank you for the query.
Pain at the back of the head is usually caused by cervical spine or cervical muscles issue. The dent you are able to feel is most likely due to tensed muscles so on one day it may be deeper than the other day.
Your pain may be caused by staying long in one position (like in front of the computer or driving car for a long time). If you have any tingling or pain radiating to hands, dizziness, spine disc herniation in the cervical area is the case.
I suggest you to start with physical therapy. Massage, pool swimming or even hot bath and rest should relax muscles and eliminate the pain. If this wont help, you should consult neurologist.
Hope this will help. Feel free to ask further questions.
Regards.