Allan-Herndon-Dudley Syndrome: A very rare inherited disorder characterized primarilty by mental retardation. More detailed information about the symptoms, causes, and treatments of Allan-Herndon-Dudley Syndrome is available below.
See full list of 18 symptoms of Allan-Herndon-Dudley Syndrome
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Types of Allan-Herndon-Dudley Syndrome
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An X-linked mental retardation/multiple congenital anomaly (XLMR/MCA) syndrome characterized by psychomotor retardation, long thin face, severe hypotonia, joint contractures, and hyporeflexia. - (Source - Diseases Database)
Allan-Herndon-Dudley Syndrome is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Allan-Herndon-Dudley Syndrome, or a subtype of Allan-Herndon-Dudley Syndrome,
affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)
Ophanet, a consortium of European partners,
currently defines a condition rare when it affects 1 person per 2,000.
They list Allan-Herndon-Dudley Syndrome as a "rare disease".
Source - Orphanet
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