question: Hello. My friend last night experienced two episodes of sudden bloodrush to the head, felt very warm and his heart pounded like crazy. It made us both nervous. The first time I thought it could be because he had accidently inhaled fumes from massageoiles, but the second time he was just lying on the couch relaxing. It went 5-6 hours between these two episodes. What can it be? He is good health normally, 22 years old.