I'm 23 years old, I was diagnosed with sinus arrhythmia when I was 15 when I had my first attack. I get my attacks whenever I get angry and exhausted. My attacks includes chest pain, palpitation, dizziness and extremely painful cramps all over my body. I have been researching just recently after my last attack, but I cannot find anyone who have the same symptoms I as have particularly the muscle cramps from foot to jaw. Is it possible that it's not just sinus arrhythmia that I'm having?? thanks.