I am having symptoms on and off when I am golfing, working in the yard, exerting myself. I get short of breath because it seems like my airways are closing on me. I get clammy and sweat through the top of my head. I feel a tightness between my shoulder blades, If I don t stop or sit down, I feel like I m going to pass out. The outer edges of my vision are kind of jumpy and start closing in on me. My hands will feel shaky. And I will feel slightly nauseous. I have had my heart checked out and everything is fine. Same with my lungs. My worst time is when its humid; it doesn t even have to be particularly hot, just humid. Symptoms will go away in about 20 minutes if I can get in a cool place and rest. I have been post menopausal for several years but I still have hot flashes every evening before bed, but not during sleep. Anxiety or rushing around will bring on a hot flash too. Maybe all of this ties together some how?