Pachyonychia congenita

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Pachyonychia Congenita is a rare genetic disorder that primarily affects the skin, nails, and other keratinous tissues. It is characterized by thickened nails (pachyonychia) and painful palmoplantar keratoderma. The condition is caused by mutations in the genes that encode keratin, a protein that provides strength and resilience to the skin and its appendages.

Symptoms and Signs[edit | edit source]

The most common symptoms of Pachyonychia Congenita include:

  • Thickened nails (pachyonychia)
  • Painful palmoplantar keratoderma
  • Oral leukokeratosis
  • Follicular keratosis
  • Cysts

Causes[edit | edit source]

Pachyonychia Congenita is caused by mutations in the KRT6A, KRT6B, KRT16, or KRT17 genes. These genes provide instructions for making keratins, which are tough, fibrous proteins that form the structural framework of certain cells, particularly cells that make up the skin, hair, nails, and the lining of internal organs and body cavities.

Diagnosis[edit | edit source]

Diagnosis of Pachyonychia Congenita is based on the clinical features and confirmed by genetic testing.

Treatment[edit | edit source]

There is currently no cure for Pachyonychia Congenita. Treatment is symptomatic and supportive, focusing on managing the painful palmoplantar keratoderma and other symptoms.

See Also[edit | edit source]

References[edit | edit source]


Pachyonychia congenita Resources

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Contributors: Prab R. Tumpati, MD