I am having pain in the base of my skull right where the spinal cord goes into my head. Someone said message it but it makes me have unbelievable pain?

Occipital neuralgia. Sounds like there is irritation of the nerve there. Causes can include trauma to the back of the head, neck tension and/or tight neck muscles, osteoarthritis, rarely tumors in the neck, cervical disc disease, infection, gout and diabetes. People with migraine can sometimes experience occipital neuralgia too.