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A patient with cognitive and movement complaints 02

Topic: Adult

Created on Tuesday, September 23 2008 by jdmiles

Last modified on Tuesday, September 23 2008.

A 38 year-old female presents to your office accompanied by a family member, who helps provide the history. The patient has had a 1 year history of worsening psychiatric and neurologic issues, including memory problems and odd movements and uncharacteristic irritability. The patient is on metoprolol for hypertension, and has no other past medical history. The patient confirms that other family members have had similar symptoms, and some have died at an early age. On exam, you note oculomotor dysfunction, cognitive slowing, motor impersistence, generalized choreiform movements, and slightly impaired memory. CT of the brain is remarkable only for slight atrophy of the caudate bilaterally. The patient's diagnosis was confirmed by genetic testing, which showed a CAG trinucleotide repeat on chromosome 4.
Of the following statements, which is most accurate about this patient's disease?

 
        A) This disease does not affect swallowing
 
        B) Tetrabenazine can delay the progression of this disease
 
        C) Clinical onset of symptoms does not occur before age 35
 
        D) This disorder has a higher prevalence among Asians than among blacks or caucasians
 
        E) Haloperidol can be helpful in symptomatic treatment of the chorea in this disease
 

 


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This question was created on September 23, 2008 by jdmiles.
This question was last modified on September 23, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) This disease does not affect swallowing

This answer is incorrect.


This patient has Huntington disease (HD). Dysphagia is common in this disease, and many patients with HD eventually die from dysphagia or aspiration.   (See References)

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B) Tetrabenazine can delay the progression of this disease

This answer is incorrect.


This patient has Huntington disease (HD). There is currently no disease-altering treatment, but the choreiform movements are sometimes alleviated with neuroleptics (e.g., haloperidol) or tetrabenazine.   (See References)

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C) Clinical onset of symptoms does not occur before age 35

This answer is incorrect.


This patient has Huntington disease (HD). Symptoms of HD usually begin between 35 and 45 years of age, but cases with onset as early as 2 years and as late as 92 years have been reported.   (See References)

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D) This disorder has a higher prevalence among Asians than among blacks or caucasians

This answer is incorrect.


This patient has Huntington disease (HD). Prevalence of HD among caucasians is approximately 10 cases per 100,000. Prevalence is much less in black and Asian populations.   (See References)

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E) Haloperidol can be helpful in symptomatic treatment of the chorea in this disease

This answer is correct.


This patient has Huntington disease (HD). There is currently no disease-altering treatment, but the choreiform movements are sometimes alleviated with neuroleptics (e.g., haloperidol) or tetrabenazine.   (See References)

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References:

1. Walker, F.O. (2007). "Huntington's Disease." Semin Neurol, 27(2) 143-50. (PMID:17390259)
2. Walker, F.O. (2007). "Huntington's disease." Lancet, 369(9557) 218-28. (PMID:17240289)
3. Zaidat, O.O., and Lerner, A.J. (2002). The Little Black Book of Neurology, 4th Edition. Mosby, St. Louis (ISBN:0323014151) Advertising:
4. Bertelson, J.A., and Price, B.H. (2004). Depression and psychosis in neurological practice. In Bradley, W.G., Daroff, R.B., Fenichel, G.M., and Jankovic, J. (Eds.). Neurology in Clinical Practice, Fourth Edition. Butterworth Heinemann, Philadelphia, pp. 103-116 (ISBN:0750674695). Advertising:
5. Shannon, K.M. (2004). Movement disorders. In Bradley, W.G., Daroff, R.B., Fenichel, G.M., and Jankovic, J. (Eds.). Neurology in Clinical Practice, Fourth Edition. Butterworth Heinemann, Philadelphia, pp. 2125-2168 (ISBN:0750674695). Advertising:
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adult
A patient with cognitive and movement complaints 02
Question ID: 010108123
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/23/2008
Modified: 09/23/2008
Estimated Permutations: 49140000

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