What should be reported immediately to the nurse upon discovery?

Sudden numbness on the left arm is a critical symptom that should be reported immediately to the nurse because it could indicate a serious medical condition, such as a stroke or other neurological event. Numbness, particularly if it occurs suddenly and is localized to one side of the body, may suggest that there is a disruption in blood flow to the brain or spinal cord. Rapid identification and intervention are vital in such cases to minimize potential damage and improve outcomes.

In contrast, while increased appetite, change in skin color, and severe headache may warrant attention and further observation, they do not typically indicate an immediate medical emergency. Increased appetite can be influenced by various factors, often related to lifestyle or medications, and usually does not require urgent care. Change in skin color can signify several conditions but requires context to determine severity. Severe headache, while potentially serious, is less immediately alarming than the onset of sudden numbness, which suggests an acute neurological issue.