Conversation: The conversation between human and AI assistant.
[|Human|] Hi I have a pain in my head that reaches from behind my ear to my forehead and behind my left eye. A few days ago it started on the right side of my head but has switched to left. I had pneumonia last year which resulted in blood clots on my lung. I had warfarin for 3 months but came off the course because I felt worse. What could be causing the pain?
[|AI|]  Thanks for your question on Chat Doctor. I can understand your concern. Since you had pulmonary embolism (PE) (blood clots in the lungs) and not taken full treatment, we should rule out transient embolic in your brain for such migratory headache. So better to get done MR Angiography of brain vessels. If this is normal then no need to worry about embolism. Sometimes, migraine can also cause similar kind of migratory headache. So avoid stress and tension, be relaxed and calm. Avoid excessive sun exposure.  Chat Doctor.