Not looking for medical advice just wondering has anyone else experienced this weird scary sensation? Comes on randomly or during an anxious moment. I describe it as a head rush. It’s like as if you stood up really quickly but it happens at rest. When this happens it either feels like that, or a sinking sensation in my head and I feel kind of woozy after it and I also get a fright so I get an adrenaline type feeling in my chest or stomach.