Parry-Romberg syndrome

Parry-Romberg syndrome (PRS), also known as progressive facial hemiatrophy (PFH), is a rare progressive craniofacial disorder (phakomatosis).

It is classically characterized by a slow progressive degeneration (atrophy) of the soft tissues of half of the face (hemifacial atrophy). This involves the skin, underlying soft tissues, cartilaginous structures and bone. 

There may be slightly increased prevalence in females. It is thought to be of sporadic onset.

It typically presents in childhood. The overlying craniofacial skin in the affected region may be hyperpigmented.

The condition is often accompanied by:

Other possible associations include:

  • may show atrophy on one side of the face +/- scalp
  • high (T2/PD/FLAIR) signal of white matter within the ipsilateral and less commonly contralateral brain parenchyma has also been reported on MRI 8  
  • ipsilateral and less often contralateral leptomeningeal enhancement
  • ipsilateral parenchymal atrophy
  • ipsilateral cerebral microhemorrhages
  • ipsilateral parenchymal calcification
  • intracranial aneurysms

Caleb Hillier Parry was a British physician (1755-1822), and Moritz Heinrich Romberg was a German neurologist (1795-1873).

Article information

rID: 12633
Section: Syndromes
Synonyms or Alternate Spellings:
  • Progressive facial hemiatrophy
  • Parry Romberg syndrome
  • Romberg syndrome
  • Romberg disease
  • Progressive facial hemiatrophy (PFH)
  • Progressive hemifacial atrophy
  • Parry Romberg syndrome (PRS)

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Cases and figures

  • Case 1: on right side
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  • Case 2: on left side
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  • Case 3: on left side
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