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Two major problems facing people with Huntington's
disease that change quality of life:
This cognitive impairment
includes the inability to plan and initiate an activity, the inability
to switch from one plan to another, diminished verbal fluency, and
perseverative behaviors.
APPROACH: Patients with HD should be presented with two
choices instead of open-ended questions. They should be presented
with an activity and encouraged to begin with verbal prompting. To
overcome apathy, non-verbal modeling can be a helpful trigger to
start. Interest in the activity can be sustained if the caregiver
also participates in the activity. Perseveration requires distraction,
coaxing onto another topic, change of place, and a positive response.
Repeated demands by the patient should be addressed as quickly as
possible to avoid escalation to angry outbursts, as calmly as possible
to get the person's attention, and with a positive response. A refusal
will not stop perseveration. For example: a patient with HD wants
a cigarette before the scheduled time. Instead of saying, "No. It's
not time yet," a better response is "Yes, you can. I'll give you
a cigarette in 15 minutes. Why don't you go ahead to the room, and
I'll meet you there."
There
are two categories of abnormal movements: abnormal involuntary movements
(AIMs) and loss of volitional control. Abnormal involuntary movements
include dance-like movements (chorea), twisting or sustained postures
(dystonia), rigidity, motor restlessness, tremor and jerky movements
(myoclonus). Loss of volitional control, including motor impersistence,
tends to be more disabling. Interrupted saccadic and smooth pursuit,
and uncoordinated speech, swallowing, grasp and gait with AIMs make
the person appear awkward, drunk, boisterous, cognitively and behaviorally
more impaired than they actually are. When strangers react with curiosity
and families with embarrassment, this intensifies anxiety and amplifies
movements. Staying home, only attending events with close friends
and family, abandoning favorite group activities in favor of solitary
ones may reduce the patient's anxiety but the net result is social
isolation, guilt, boredom, loneliness, grief and loss for the person
with HD and increased burden expressed by the caregiver family.
APPROACH: Anxiolytics and anti-depressants have helped
people resume favorite activities and accept the risk but not assume
the inevitability of social embarrassment. Structured group activities--dancing,
martial arts, exercise, swimming, hiking and camping--allow re-entry
into a social life outside the family and provide respite for caregivers.
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