Unit Statistical Report. Data, including losses and payroll by classification, resulting from every workers' compensation insurance policy written in California is reported to the WCIRB in a Unit Statistical Report (USR).
Carpal tunnel syndrome can cause left arm weakness. Tendinitis can cause left arm weakness. Left arm weakness can be an early sign of a heart attack. A sprained elbow can be the cause of left arm weakness. Typing on a keyboard can be hard on the wrists, possibly aggravating carpal tunnel problems. A pinched nerve in the neck may cause left arm weakness.
Arm or elbow pain. Arm pain is common and usually caused by an injury or fall. It can often be managed with rest and over-the-counter painkillers. See your GP if your arm pain doesn't improve after several days, or if there's increasing redness, swelling or pain.