My heart hurt when I take hot showers. My left hand and foot also hurt and I can feel the blood pumping to my left hand. My hands will then turn bluish (the blue veins become very obvious when the water is hot) and if I hold my hands upwards, those obvious blue veins will go back to normal. However, today, maybe the water was too hot for me (haven't taken very hot showers since last August) and my heart and hand keep hurting for over 8 hours now.

I'm an Asian, 33 years old, around 5 feet tall. I went to the ER last year because of severe chest pain (doctor told me my potassium was too low), and the above situation happened AFTER I went to the ER. I'm allergic to iodine and I have tendonitis. My family doctor and cardiologist didn't find anything wrong with my heart from EKG and stress tests, and my rheumatologist also said I don't have any auto-immune disease. I'm worried because it keeps happening to me but can't find the cause.