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.
An arm or elbow injury that causes severe pain may indicate an elbow fracture (broken bone) or contusion (bruise). It can be hard for a parent to tell whether an injury is nursemaid's elbow or a fracture, so it's important to call your doctor if your child has injured an elbow.