Causes

• the heart's natural pacemaker (sinus node) develops an unusual rhythm;
• electrical impulses are generated but are not conducted to the rest of the heart (blocks).
• presence of electrical impulses from other areas of the heart, which can inhibit normal functioning.

Symptoms

• premature beats, palpitations and arrhythmias
• Dizziness
• Fatigue
• Malaise
• • Fainting