Hemidystonia-hemiatrophy syndrome

What is Hemidystonia-hemiatrophy syndrome?

Hemidystonia-hemiatrophy (HD-HA) is a rare dystonia, usually caused by a static cerebral injury occurring at birth or during infancy, that is characterized by a combination of hemidystonia (HD), involving one half of the body, and hemiatrophy (HA) on the same side as the HD.

Other condition names

  • HD-HA syndrome

Inheritance type

Not applicable


  • Worldwide: <1 in 1,000 000

Age of Onset

  • Adolescent
  • Adult
  • Childhood
  • Infancy
  • Neonatal
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on "https://www.orphadata.com". Data version 1.3.16 / 4.1.7.