Conversation: The conversation between human and AI assistant.
[|Human|] I have a several knots, bumps on the left back side of my head, about equal with the back of my ear that developed while driving my car. I think it could be caused by tension or perhaps my posture while sitting in the car is aggravating a muscle in my back, possibly related to straining it during crossfit.
[|AI|]  Hi, Regarding your concern, I would explain that these bumps can be lymph nodes or inflammation. Another possible cause to consider is skull modifications related to calcium deficiency. I would recommend consulting with your doctor for a physical exam. Further tests may be needed like: - a scull X-ray study or a brain CT scan-calcium and vitamin D plasma levels for possible deficiency-complete blood count, PCR, sedimentation rate for inflammation Hope to have been helpful. Let me know if I can assist you further. Best wishes,