The People Who Don't Feel Pain

TL;DR

Congenital Insensitivity to Pain (CIP) is a rare condition where individuals cannot feel physical pain due to nerve damage, leading to lifelong complications and injuries.

Transcript

Congenital Insensitivity to Pain (CIP) is technically classified as a peripheral neuropathy- basically meaning you have damage to, or a disease affecting, your nerves. This rare condition leaves its sufferers without the ability to feel pain. While you might think it sounds like a blessing getting to go through life never having to feel physical pa... Read More

Key Insights

• 👨‍🎨 Pain is a fundamental part of human life, motivating us to protect ourselves from harm.
• 🥺 Congenital Insensitivity to Pain (CIP) can lead to severe self-inflicted injuries in infants, causing lesions, infections, blindness, and burns.
• ☠️ CIP sufferers may experience orthopedic complications, such as bone deformities and joint problems.
• 👨‍🎨 CIP is associated with mutations in three genes (SCN9A, SCN11A, and PRDM12) that affect nerve function and the development of pain-sensing fibers.
• 😣 The inability to feel pain can have severe consequences, as it prevents individuals from recognizing and addressing injuries.
• 🖐️ Paper cuts are exceptionally painful because they occur on fingers and hands, which have more nociceptors per square millimeter, and the dull edges of paper cause more microscopic damage.
• 🤕 Paper cuts hurt longer due to their shallow nature and exposure of sensitive nerves to irritants.

Questions & Answers

Q: What is Congenital Insensitivity to Pain (CIP)?

CIP is a rare condition where individuals lack the ability to feel physical pain due to nerve damage or diseases affecting the nerves.

Q: How do infants with CIP unintentionally harm themselves?

Infants with CIP can unknowingly chew their tongues, cheeks, or hands, leading to countless lesions and infections. They may also scratch their eyes to the point of blindness and sustain severe burns by accidentally touching hot objects.

Q: What complications do individuals with CIP face as they grow up?

CIP sufferers may develop orthopedic complications, including bone deformities from untreated fractures and joint problems known as Charcot joints, causing malformations, loss of function, and even amputation.

Q: What genes are associated with Congenital Insensitivity to Pain (CIP)?

There are three known genes (SCN9A, SCN11A, and PRDM12) with mutations that can lead to a diagnosis of CIP. These genes either affect how nerves transmit pain signals or the number of pain-sensing nerves present.

Summary & Key Takeaways

• Congenital Insensitivity to Pain (CIP) is a peripheral neuropathy that leaves individuals unable to feel pain.

• Infants with CIP unintentionally harm themselves, leading to lesions, infections, blindness, and severe burns.

• CIP sufferers face orthopedic complications, such as bone deformities and joint problems, as they grow up.