Almost blacked out right now

[pghbex]

I'm 35 years old and from time to time something weird happens to me.  I get a sudden shortness of breath, followed by numbness in my arms, neck and face, sometimes I feel my face getting hot too, followed by heart palpitations and sometimes I get dizzy and almost black out.  It happened just now.   Somtimes I can feel when it comes on and can stop it from happening, but sometimes it happens so fast that there nothing I can do.  I lay down and take deep breaths until the palpitations stop.  What could this be?  I saw a doctor about this last year and she told me anxiety could be a factor, but I'm not anxious at all.  I wasn't doing anything that would stress me out or make me anxious at the time that it happend.  I'm confused.

[Mom2four85]

If you haven't, you should ask about a tilt table test as well as the blood work; TTT will rule out things to do with the autonomic nervous system (ANS) such as blood pressure drops that may cause some of these symptoms

[kenkeith]

Did your doctor  check you for low potassium? Are you taking a diurectic or BP medication? It is not possible to diagnose a problem on a forum.  Your doctor has or should have your health history, tests, medication, etc.  If the current doctor is unable to determine the underlying cause, you may want to see neurologist.