An outpatient client who has been receiving haloperidol (Haldol) for 2 days develops muscular rigidity, altered consciousness, a temperature of 103°F (39.4°C), and trouble breathing on day 3. The...

An outpatient client who has been receiving haloperidol (Haldol) for 2 days develops muscular rigidity, altered consciousness, a temperature of 103°F (39.4°C), and trouble breathing on day 3. The nurse interprets these findings as indicating which of the following?

1. Neuroleptic malignant syndrome.

2. Tardive dyskinesia.

3. Extrapyramidal adverse effects.

4. Drug-induced parkinsonism.