Final answer:
Early signs and symptoms of rubeola include initial cold-like symptoms such as a high fever, cough, and runny nose, which typically precede the rash.
Step-by-step explanation:
The early signs and symptoms of rubeola (also known as measles) before the appearance of the notable rash include initial cold-like symptoms such as a high fever, a cough, and a runny nose. The nurse's instructions would likely include symptoms such as a runny nose, sneezing, and coughing which precede the rash characteristic of rubeola. These symptoms align with the general progression of viral respiratory infections, where initial symptoms like those experienced with a common cold precede more specific and severe symptoms like a widespread rash.