What finding should the nurse expect in a client with iron deficiency anemia?

In a client with iron deficiency anemia, the nurse should expect to see difficulty concentrating as a significant finding. Iron is essential for the production of hemoglobin, which is vital for transporting oxygen throughout the body. When a person does not have enough iron, there is a decrease in the availability of hemoglobin, leading to reduced oxygen supply to various organs, including the brain.

The brain requires a continuous supply of oxygen to function optimally, and when oxygen levels are low due to anemia, cognitive functions can be affected. This can manifest as difficulty with concentration, focus, or mental fatigue. These symptoms arise from the body's attempt to cope with decreased oxygen levels, impacting mental acuity and attentiveness.

In contrast, the other options do not typically align with the expected findings in a patient with iron deficiency anemia. Weight gain is not a symptom of anemia; instead, individuals might experience weakness and fatigue leading to decreased physical activity. Increased energy levels would also be atypical, as the lack of sufficient iron usually leads to fatigue and lethargy due to the insufficient transport of oxygen. Skin rashes can occur for various reasons, but they are not directly related to iron deficiency anemia and are not a common finding in these patients.