Which is a sign of a stinger injury related to nerve root damage?

A stinger injury, often referred to as a burner, typically occurs due to a stretch or compression of the brachial plexus nerves, which can lead to various neurological symptoms. Weakness in the arm is a common manifestation of this type of nerve root damage. This weakness is often localized to specific muscles innervated by the affected nerves and is usually temporary, resolving as the nerve function returns.

In cases of stinger injuries, while some individuals may experience other symptoms such as numbness or tingling, the presence of weakness directly indicates involvement of the motor nerves affected by the injury. This makes it a primary sign of nerve root damage.

The other choices may relate to neurological issues but are not specifically characteristic of a stinger injury. Loss of fine motor skills might suggest more extensive central nervous system involvement beyond the acute injury stage. Complete paralysis indicates a more severe nerve injury or damage and is usually not associated with the transient nature of a typical stinger injury. Increased reflexes generally suggest heightened nerve function rather than damage. Thus, weakness in the arm stands out as the most relevant sign associated with a stinger injury.