Rare Zebra

Rare disease search prototype built on Orphanet data

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ORPHA:73267

Non-24-hour sleep-wake syndrome

Also called Hypernychthemeral syndrome

Body system
Neurological diseases
Inheritance pattern
Unknown
Typical age of onset
All ages
Estimated prevalence
Unknown (Worldwide)
Rarity class
Unknown

ORPHA:73267 is classified under "Neurological diseases" in the Orphanet nomenclature.

Common signs

  • Blindness
  • Depression
  • Excessive daytime somnolence
  • Abnormal pineal melatonin secretion
  • Asthenia