Histidinemia

Important
It is possible that the main title of the report Histidinemiais not the name you expected.

Synonyms

Histidase Deficiency
Histidine Ammonia-Lyase (HAL) Deficiency
HAL Deficiency
HIS Deficiency
Hyperhistidinemia

Disorder Subdivisions

None

General Discussion

Histidinemia is a rare hereditary metabolic disorder characterized by a deficiency of the enzyme histidase, which is necessary for the metabolism of the amino acid histidine. The concentration of histidine is elevated in the blood. Excessive amounts of histidine, imidazole pyruvic acid, and other imidazole metabolism products are excreted in the urine. The majority of individuals with histidinemia have no obvious symptoms that would indicate that a person has this disorder (asymptomatic). Histidinemia is inherited as an autosomal recessive trait.
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Resources

CLIMB (Children Living with Inherited Metabolic Diseases)
Climb Building
176 Nantwich Road
Crewe
Intl
CW2 6BG
United Kingdom
Tel: +44 870 7700 325
Fax: +44 870 7700 327
info@climb.org.uk
http://www.CLIMB.org.uk

NIH/National Institute of Diabetes, Digestive & Kidney Diseases
Endocrine Diseases Metabolic Diseases Branch
2 Information Way
Bethesda
MD
20892-3570
Tel: (301)654-3810
Fax: (301)496-7422
NDDIC@info.niddk.nih.gov
http://www.niddk.nih.gov

Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg
MD
20898-8126
Tel: (301)519-3194
Fax: (240)632-9164
800: (888)205-2311
TDD: (888)205-3223
gardinfo@nih.gov
http://www.genome.gov/10000409

For a Complete Report:

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email orphan@rarediseases.org

Last Updated: 2/12/2009
Copyright 1988, 1989, 1996, 2003, 2007, 2009 National Organization for Rare Disorders, Inc.

WebMD Medical Reference from the National Organization of Rare Disorders

Last Updated: February 12, 2009

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