Muscle cramps can also be due to low potassium. Low potassium can also cause
irregular heartbeats. I'm on thryroid, and on potassium. I'm not sure how
they are connected. Also, heart palpitations can be caused by Mitral Valve
Prolapse--which causes a "clicking" sound. It's associated with anxiety,
palpitations, and many other symptoms--but it is almost always innocent. It
is good to have it evaluated though. It is mostly in women. It's like a
"droopy valve"!
Patti