Final answer:
A nurse should teach parents about the possible side effects of baclofen, such as muscle weakness and drowsiness, to help them appropriately monitor their child with cerebral palsy.
Step-by-step explanation:
When teaching parents about a child who has been prescribed baclofen for cerebral palsy, a nurse should include information on potential side effects that the medication could have. Baclofen is a muscle relaxant used to relieve symptoms associated with spasticity in conditions like cerebral palsy. The side effects that the nurse should include in the teaching are muscle weakness and drowsiness. It is important for the parents to be aware of these possible effects so they can monitor their child appropriately and take necessary precautions such as preventing falls or accidents due to muscle weakness or drowsiness.