What Is Phocomelia?

What Is Phocomelia?

Phocomelia is a rare congenital condition that affects limb development in a baby. It results in abnormally short limbs, or in some cases, the complete absence of arms or legs. The condition typically develops early in pregnancy and can be caused by genetic mutations or exposure to harmful substances that disrupt foetal development. Knowing the causes can help doctors and parents take early steps to manage their child’s health. This blog shares key information about phocomelia, including signs, reasons, and treatment options to support child wellness. Read on to know more.

Phocomelia is a rare congenital condition that affects limb development in a baby. It results in abnormally short limbs, or in some cases, the complete absence of arms or legs. The condition typically develops early in pregnancy and can be caused by genetic mutations or exposure to harmful substances that disrupt foetal development. Knowing the causes can help doctors and parents take early steps to manage their child’s health. This blog shares key information about phocomelia, including signs, reasons, and treatment options to support child wellness. Read on to know more.

Causes of Phocomelia

Phocomelia affects approximately 0.62 out of every 100,000 live births. It may be noticed during pregnancy scans or identified at birth through physical examination. There are a number of known causes of phocomelia, but in many cases, the exact cause is not clear. Some common phocomelia causes are:

• Genetic changes:

Phocomelia can be inherited and is linked to an abnormality in chromosome 8. It is passed on in an autosomal recessive pattern. This means both parents must carry the faulty gene for the child to be affected. In other instances, it may result from a spontaneous genetic mutation that is not inherited.

• Medicines during pregnancy:

Some medicines, such as thalidomide (used in the 1950s and 1960s), were found to cause phocomelia when taken during early pregnancy. Thalidomide is used to treat conditions such as Crohn’s disease, multiple myeloma, and Hansen’s disease (leprosy). If you are prescribed thalidomide, please make sure you are not pregnant.

• Other reasons:

Certain factors during pregnancy may increase the risk of phocomelia, including substance use such as alcohol or cocaine, gestational diabetes, exposure to X-ray radiation, and problems with blood flow to the developing baby.

In some cases, doctors are unable to find a clear explanation. Parents with a family history or past cases of birth conditions should speak to a doctor before planning a pregnancy, and having family health insurance may help manage related medical consultations and screenings.