As a teenager, I one time had horrible experience of chest pain during school and later found out it was tachycardia. Afterwards, I began to experience chest discomfort and 2-3 attacks a year.
In thinking that heart ablation would treat the pain, I had surgery several years later. I no longer have tachycardia attacks but continued to develop main all over, basically starting from the chest down to the back and head. Now, I have muscle fatigue and discomfort everywhere.