One time I took a solo 1.5 hour flight and on the descent I suddenly felt a tingling on the top of my head and down my face, which quickly turned into a feeling like someone chopped an axe into the top of my head. I felt an excruciating pain on the top center of my head , behind my eyes and down my face and was trying not to react in front of all the other passengers. The pain was unlike anything I’ve ever experienced. By the time we landed and I got off the plane the sharpness of the pain subsided but I had a bad headache for 2 days after. I thought I might die honestly and it spun me into such a bad anxiety attack. I did some searching and only found one post ever of something similar happening to someone else and it was from sinus pressure. I wasn’t sick at all or stuffed up so it was surprising. So now when I fly I pop Sudafed and blow my nose frequently and basically have a panic attack on the descent because of my fear of it happening again.