What sign may indicate hypokalemia in a client with diarrhea?

Muscle weakness is a significant sign that may indicate hypokalemia, especially in a client experiencing diarrhea. Diarrhea can lead to significant potassium loss, as potassium is one of the electrolytes lost in stool. When the body has insufficient potassium levels, it affects muscle and nerve function, resulting in symptoms such as weakness or cramping. This manifestation can be particularly critical because muscle weakness may not just be a minor issue; it can lead to more severe complications, including respiratory issues if the muscles involved in breathing are affected.

In contrast, while other symptoms such as frequent urination can be associated with electrolyte imbalances or dehydration, they are not as specifically indicative of hypokalemia. Mild cough and high fever do not directly correlate with potassium levels and are typically associated with other causes that aren't directly linked to hypokalemia. Recognizing muscle weakness as a symptom allows for prompt assessment and intervention, which can be crucial in managing the client's overall health.