Final answer:
The nurse should allow times for the client to engage in handwashing but also work towards reducing the behavior through therapy and interventions.
Step-by-step explanation:
Obsessive-compulsive disorder (OCD) is characterized by impaired social skills, repetitive motor behaviors, strict adherence to certain rituals, and preoccupation with specific subjects. One common compulsion in OCD is excessive handwashing. When responding to a client with obsessive handwashing, the nurse should focus on allowing times during which the client can engage in the behavior to satisfy their compulsion. However, the nurse should also aim to gradually reduce the frequency of the behavior through therapy and interventions.