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Congenital insensitivity to pain with anhidrosis

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Congenital insensitivity to pain with anhidrosis (CIPA) is a rare inherited disorder of the nervous system which prevents the sensation of pain, heat, and cold. A person with CIPA cannot feel pain or differentiate extreme temperatures. "Anhidrosis" means the body does not sweat, and "congenital" means that the condition is present from birth.


Clinical descriptionEdit

Patients with this disorder are very likely to injure themselves in ways that would normally be prevented by feeling pain. The main features of the disorder are: lack of pain sensation, painless injuries of the arms, legs and oral structures, fever during hot weather because of inability to sweat, mental retardation, infection and scarring of the tongue, lips and gums, chronic infections of bones and joints, bone fractures, multiple scars, osteomyelitis and joint deformities, which may lead to amputation. People with this disorder may not be able to feel a physical orgasm.

CauseEdit

CIPA is caused by a genetic mutation which prevents the formation of nerve cells which are responsible for transmitting signals of pain, heat, and cold to the brain. Overheating kills more than half of all children with CIPA before age 3.

IncidenceEdit

CIPA is extremely rare. There are only 60 documented cases in the United States and more than 300 in Japan because it occurs more often in genetically homogeneous societies. It is also found in Gällivare, a Swedish village in Kiruna Municipality in northern Sweden, where nearly 40 cases have been reported; however, the disorder found in Vittangi may be of a different kind because those affected can perspire. (Linde, 2006)

In FictionEdit

  • In the episode "Sometimes a Fantasy" of Grey's Anatomy, a young girl has undiagnosed CIPA and a long string of injuries, but since she feels no pain, she thinks she is a superhero.

See alsoEdit

External linksEdit

fi:CIPA
lv:Iedzimta nejūtība pret sāpēm un anhidroze
sv:Norrbottnisk ärftlig smärtokänslighet
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