My 17 year old daughter is experiencing a sudden rapid heartbeat and a feeling of pain in her chest (behind the stirnum). Is this serious? ... View answer

I get very tight muscles in my arms and legs and sometimes the shoulders and then I get a rapid bothersome rapid heartbeat, what can this be? ... View answer

brain is spinning with millions of thoughts that I cannot shake off. It drives me crazy. I always feel ... breath and cannot really manage to talk at that moment. It felt like my heartbeat was losing one... View answer

Hi doctor Since few days I am waking up to sudden fast heartbeat and unable to fall asleep after that , Mornings I don't feel this , sometimes have to take deep breaths and get tired but these usually ... View answer

Hi doctor Since few days I am waking up to sudden fast heartbeat and unable to fall asleep after that , Mornings I don't feel this , sometimes have to take deep breaths and get tired but these usually ... View answer

One moment I was laying in bed watching a show ad the next I was waking up with a rapid heart beat and my legs shaking... I looked at the clock and a half an hour went by. I don t remember falling ... View answer

blood pressure. I wake up every night with profuse sweating and a rapid heartbeat. I also take Synthroid because my thyroid does not produce enough on its own. Can you advise why I may be... View answer

Hello, Im a female 46yrs old and experiencing symptoms rapid heart rate while sleeping waking up ... beat. Please provide me with some answer.thank you. ... View answer

Daughter, age 10, wakes up often within an hour or less of going to bed with a rapid heartbeat, clammy and rigid to where if I touch her, she will be almost in a frozen state. Often times, she will ... View answer

Having what I believe is tachycardia (sp?) i.e., rapid heartbeat, accompanied by lightheaded ness ... periods most days the last 4 days. Why all of a sudden. Jam male 59 yo and in fairly good shape,... View answer