Expectations	It is important that family members and other care partners have appropriate expectations regarding a patient's abilities and needs. Some HD patients with high levels of symptomotology have great difficulty controlling OCBs, and should not be expected to control their symptoms. They may not respond quickly and consistently to strategies listed below.
Prevention	If there are situations that evoke perseverative behaviors (e.g., discussing driving ability or cigarette smoking), then it is best to avoid these topics.
Redirection	Redirection is the most common environmental strategy used. It may take the form of changing the subject, starting a new activity, moving to a different room, placing an interesting object (e.g., a coin) in the patient's hand as a distraction, and the like.
Setting limits	It is sometimes useful to set a limit to the perseverative activity and then insist on an end to the activity; however, this is unlikely to work for severely impaired patients or those with extremely poor insight.
Dramatic termination	It may be useful to dramatically end a topic or activity. For example, write the topic on a card, and tear up the card, saying, "We are done with that; it's over; no more!" and then move on to a new activity.
Gradually modifying the activity	One possibility is for care partners to enter the activity with the patient and gradually add activities to redirect the behavior. For example, a patient who perseverates on rearranging objects in the house could gradually be directed to dusting the room.
Ignoring	If perseverative behavior has developed to gain attention from care partners or others, ignoring the behavior will stop reinforcing it positively. However, ignoring perseveration can lead to aggression or outbursts from patients who are frustrated, and may not be useful in many people with HD.
Source: LEARNet Tutorial on Perseveration