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Symptoms

  • May 1, 2014
  • 1 min read

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Symptoms

Wide range of symptoms:

Blistering or freckling after minimum sun exposure

Premature aging of skin, lips, eyes, mouth and tongue; with significant increased incidence of cancer in these same areas

Blindness resulting from eye lesions or surgery for skin cancer close to the eyes

Progressive neurological complications including:

  • developmental disabilities

  • mental retardation

  • high frequency hearing loss, progressing to deafness

  • de Sanctis-Cacchione syndrome (rare)

XP is very rare. Prevalence is estimated at 1:1,000,000 in the United States. Certain populations have a higher prevalence. For example, in Japan, the prevalence is estimated as 1:40,000. Prevalence is increased in North Africa (Tunisia, Algeria, Morocco, Libya, and Egypt) and the Middle East (Turkey, Israel, and Syria), especially in communities in which consanguinity is common.

Clinical diagnosis possible

Life threatening

  • The DNA damage is cumulative and irreversible

  • Up to 2000-fold increased risk of skin cancer, or pre-cancerous tumors and mouth and eye tumors

Other disorders associated with defective DNA repair

  • Ataxia-Telangiectasia

  • Bloom Syndrome

  • Cockayne Syndrome

  • Fanconi Anemia

  • Trichothiodystrophy (TTD)

Other disorders characterized by light sensitivity

  • Drug-induced photosensitivity

  • Erythropoietic Protoporphyria (EPP)

  • Lupus (30% of cases)

  • Polymorphous Light Eruption (PLE)

  • Porphyria (general)

There is no cure for XP. The DNA damage is cumulative and irreversible. Management is limited to avoidance of exposure to damaging UV radiation by staying indoors with sunlight blocked out, and use of protective clothing, sunscreens and sunglasses. Also, avoid other known carcinogens.

10 Comments


scott winter
scott winter
7 days ago

Symptoms, symptoms... sounds like something my coffee machine experiences before 9 AM. Hope whatever ailment is being discussed here got a speedy diagnosis! And hopefully, the solution wasn't just "turn it off and on again."


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ADDRESS

437 Snydertown Road

Craryville, NY 12521, USA

 

Telephone: (518) 929-2174

 

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Getting a rare disease diagnosis is terrifying for patients and their parents. You are not alone. We are here to support you and help you find the light in the darkness. The XP Society is a unique to the world program for children and families who can never be in daylight. We help provide the XP family support, information and the informative foundation on which to build a healthy and happy quality of life.

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