I'm having a lot of pressure in the back of my head what could be wrong? please answer asap?

What COULD be wrong?: If an arrow was shot through the back of the head, it would go through the skin/ scalp, muscle, blood vessels, nerves, bone ( skull or neck vertebrae ), the outside lining of the brain or spinal cord, the brain or spinal cord. Many kinds of disorders with any of these structures could cause a pressure feeling. See ur doctor if symptoms persist.A stiff neck can be urgent and require immedeate attention.

See your doctor!!: See your doctor now! any serious headache with a history of diabetes can be a significant symptom. Call your doctor.