Rapid-onset Obesity with Hypothalamic Dysfunction, Hypoventilation, and Autonomic Dysregulation

National Organization for Rare Disorders, Inc.

It is possible that the main title of the report Rapid-onset Obesity with Hypothalamic Dysfunction, Hypoventilation, and Autonomic Dysregulation is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • late onset central hypoventilation syndrome with hypothalamic dysfunction
  • regulation with neural tumor

Disorder Subdivisions

  • None

General Discussion

Rapid-onset obesity with hypothalamic dysfunction, hypoventilation, and autonomic dysregulation (ROHHAD) is a rare disorder of respiratory control and autonomic nervous system (ANS) regulation, with endocrine system abnormalities. Respiratory control is the automatic function of breathing in response to varied activities of daily living (ex. exercise, sleep, eating), so within the context of the ANS. The ANS is the portion of the nervous system that controls or regulates many involuntary body functions including heart rate, blood pressure, temperature regulation, bowel and bladder control, breathing, and more. The endocrine system is regulated by the hypothalamus, and through hormones it controls growth, energy and water balance, sexual maturation and fertility as well as response to stress.

ROHHAD presents after 1.5 years of age, in otherwise healthy children. The rapid-onset weight gain (often 30 pounds in 6-12 months) is typically the herald of the disease and the harbinger of the later features of the ROHHAD phenotype. The acronym ROHHAD describes the typical sequence of symptoms experienced by most children with ROHHAD, in the order of their appearance. The clinical features of ROHHAD seem to "unfold" with advancing age in each child. ROHHAD was first described in 1965 (albeit under a different name) and since that time at least 100 children have been reported in the literature or identified with this disorder. Because of the high prevalence of cardiorespiratory arrest, early recognition and treatment of the symptoms associated with ROHHAD are essential and may be life-saving.


NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
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Tel: (301)496-5751
Fax: (301)402-2186
Tel: (800)352-9424
TDD: (301)468-5981
Internet: http://www.ninds.nih.gov/

Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311
TDD: (888)205-3223
Internet: http://rarediseases.info.nih.gov/GARD/

ROHHAD Fight Inc.
3 Surrey Lane
Hempstead, NY 11550
Tel: (516)459-6960
Fax: (516)483-0566
Email: rohhadfight@aol.com
Internet: www.rohhadfight.org

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

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:  8/22/2013
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