A nurse is reviewing the medical record of a client who reports taking pseudoephedrine for sinus congestion as needed. The nurse should identify that pseudoephedrine is contraindicated for which of the following client conditions?

The correct answer is C: Hypertension. Pseudoephedrine is a sympathomimetic agent that can increase blood pressure by causing vasoconstriction. In clients with hypertension, this can exacerbate the condition and potentially lead to hypertensive crisis. Migraines, eczema, and diverticulitis are not contraindications for pseudoephedrine use. For migraines, pseudoephedrine can actually be helpful due to its vasoconstrictive effects which can reduce sinus congestion associated with migraines. Eczema is a skin condition that is not directly affected by pseudoephedrine use. Diverticulitis is a condition involving inflammation of the colon, and while pseudoephedrine may cause mild gastrointestinal side effects, it is not contraindicated for diverticulitis.