Dysrhythmias, often called arrhythmias, are disturbances to the heart beat. They can be a sign of some form of heart disease, but they can also be completely harmless. They are not always there; they can come and go, which makes it difficult for your doctor to diagnose. Sometimes they can be severe and have serious heart complications.
They can be caused by caffeine and smoking amongst other lifestyle factors, and also by underlying heart problems such as a heart attack.
If access to Specialist Treatment centres is important, choose a policy with London Hospital coverage.