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Genetic Testing & Age/Probability Chart
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GENETIC TESTING INFO
EARLY HD
MEDICATIONS~DRUGS
Movement Disorder Medicines
Anxiety-Antidepressant Medications
Antidepressant Adverse Effects
Warnings~Adolescents Under 25
Sertraline ~Zoloft
SSRI's
Anti-psychotic Medications
Prozac, Luvox, Paxil, Zoloft & Celexa
Olanzipine & Risperidone and blood tests
Creatine
Drugs~General
Cutting Prescriptions
Sites That Help the Medicine Go Down
Vitamins & Minerals
SYMPTOMS
Why Certain Symptoms Occur In HD
Tests Commonly Used -Neuropsychological Examination
Symptom vs Medication
HD-Disability
HD~Communications
Speech & Swallowing Difficulties~Lynn Rhodes
Swallowing Problem Warning Signs
Swallowing Tests
Nutrition and HD~Anna Gaba (Recipes)
HD & Diet~HSA Fact Sheet 7
HD~Swallowing & Nutrition
Weight Gain
Taste
5 Levels Difficulty In Swallowing
Feeding Tube~Advanced Stages of HD
Feeding Tube~Jean Miller
One more word on feeding tubes
PEG Tubes and baby foods
Feeding Tubes-More Info
Dehydration
HD~Chorea
HD~Falling/Safety Issues
HD~Cognitive/Decision Making/Impulsivity
Cognitive-Short Tips
HD-Apathy
HD~Perceptual/Unawareness/Attention
Denial of HD
HD~Irritability/Temper Outbursts
Managing behavioral problems
HD~Depression
Depression - Treatment Resistant Patient
HD~Anxiety/Apathy/Irritability
HD~Mania, Obsessive Disorders
HD~Hallucinations & Psychosis
HD~Rigidity, Spasticity, and Dystonia
HD~Seizure/Convulsion/Epilepsy/Tics
Nails
MISCELLANEOUS
Adaptive Products
HD~Suicide
Teen Suicide~Let's Talk Facts
HD~Incontinence
Stress Explained-Easy/Fun Format
How To Help Someone Chronically Ill
Legal Planning for Incapacity
Out-of-Home Care Options FAQ
Preparing for Emergencies

Return To HD Support Information Website

Athena/NeuroCast
http://staging26.newtonline.com/site/content/sessions_10_2000.shtml

Also has place were HD genetics testing can be ordered.

Harper and Newcombe have calculated the following table of age-specific
Bayesian risks for asymptomatic (as confirmed by neurological exam)
individuals at a 50% prior risk of HD.

It is important to note that clinical status can only be assessed via neurological
exam; asymptomatic status should not be assumed without assessment by a
neurologist. For example, the risk of HD for an at-risk individual who is
asymptomatic at 60 years of age is reduced to 18.7% from 50%. Bayesian
risk modification is less pronounced with younger, asymptomatic patients.

Age (Years) Probability of an
HD mutation(%)
20.0 49.6
22.5 49.3
25.0 49.0
27.5 48.4
30.0 47.6
32.5 46.6
35.0 45.5
37.5 44.2
40.0 42.5
42.5 40.3
45.0 37.8
47.5 34.8
50.0 31.5
52.5 27.8
55.0 24.8
57.5 22.1
60.0 18.7
62.5 15.2
65.0 12.8
67.5 10.8
70.0 6.2
72.5 4.6

 

Interactive Pedigree

This family pedigree illustrates the inheritance of the IT15 HD mutation and how various individuals are affected by a positive diagnosis in the family. Two aspects of the disease are examined in selected family members: the individual's risk of possessing a mutation and psychosocial considerations, including genetic counseling. Click on a circle or square, representing a family member in the pedigree below, to learn of that person's unique circumstances involving HD.

The above pedigree is entirely fictional. Comments regarding psychosocial considerations are intended to represent probable situations and may not be applicable to all patients or families.

Instructions:
Click on individuals in the pedigree to learn more. A new browser window will open with details on that individual.