Mar 28, 2020 · Why Do I Have Pain in My Shoulder, Arm and Neck on the Left Side? By Staff Writer Last Updated Mar 28, 2020 7:44:47 AM ET If you are experiencing unilateral pain in your neck, shoulder and arm, it could be the result of problems ranging from some form of arthritis, trauma or other nerve-related problem, explains WebMD and Cleveland Clinic.
Atrial flutter is an abnormality in the beating of the heart, also known as arrhythmias. Symptoms include palpitations, shortness of breath, anxiety, and weakness. Treatment of atrial flutter includes defibrillation of the heart and medication.