What Is The Cause And Treatment For Heart Palpitations?

Question: After my son was born three years ago I started having heart palpitations. Then my skin began to get very dry with red itchy patches on my face. At night and sometimes during the day I would have palpitations with dizzy spells. I also started to feel very fatigued all the time. I saw a doctor for this around November of 2012. He told me that it was *probably* mitral valve prolapse and not to worry about it. So I went on as normal. I began to develop an intolerance for alcohol. My skin would get very flushed with one drink and my sinuses would get very painfully congested when I drank. I started having bad reactions to OTC medications such as NyQuil and Execederin. I was admitted to the hospital after taking the WalGreens version of NyQuil (with pseudoephedrine) after my heart rate would not come down. It spiked in the hospital and they ran a number of tests on me, but found nothing. I had a strange reaction to epinephrin at the Dentist's office and found my heart racing heavy with the hard dizziness again. One morning I found myself feeling incredibly lightheaded and I decided to take my blood pressure and found it was very high. I became very cold and started shaking violently. My teeth were chattering. I told my husband to take me to the hospital. Again, nothing was found. I started taking my blood pressure more often and found it was often high when I didn't feel right. My hair started coming out all over my hand in the shower and I became much more fatigued. I found myself having more episodes of heart racing, dizziness, cold, and/or high blood pressure. I had a recent stint where I managed to take my temperature during the episode and it came back as 92 degrees. My husband said it couldn't be right and took his and it was 95. During this episode I also had the sensation that someone was holding their hand against my throat and this sensation followed into the next day. Eventually I was again in the ER and again nothing was found. I have an appointment this Friday to get checked out. I have had every test under the sun it seems. My thyroid is fine. My blood sugar is always fine when they take it. I have no idea what is happening to me.

I had only taken these medications once (many months ago at this point) and that certainly doesn't explain why I would be having all of these side effects. I took NyQuil because I had a cold at the time and I was not drinking at the time and I took Excederine because I had a headache and, again, was not drinking at the time.