Postaxial polydactyly mental retardation

From WikiMD's Wellness Encyclopedia

Postaxial Polydactyly Mental Retardation is a rare genetic disorder characterized by the presence of extra fingers or toes (postaxial polydactyly) and varying degrees of intellectual disability. This condition falls under the broader category of polydactyly, which refers to the congenital anomaly of having more than the usual number of digits on the hands or feet. The term "postaxial" refers to the extra digits being located on the ulnar side of the hands (next to the little finger) or the fibular side of the feet (next to the little toe). The intellectual disability associated with this condition can range from mild to severe.

Causes[edit | edit source]

The exact cause of Postaxial Polydactyly Mental Retardation is not fully understood, but it is believed to involve genetic mutations. These mutations may affect the development of the limbs and the brain during early embryonic development. The condition is thought to be inherited in an autosomal recessive pattern, which means that an individual must receive a defective gene from both parents to be affected.

Symptoms[edit | edit source]

The primary symptoms of this disorder include:

  • Postaxial Polydactyly: The presence of extra digits on the ulnar side of the hands or the fibular side of the feet.
  • Mental Retardation: Varying degrees of intellectual disability, which can affect learning abilities, social interactions, and daily living skills.

Other symptoms may include developmental delays, speech delays, and other physical anomalies.

Diagnosis[edit | edit source]

Diagnosis of Postaxial Polydactyly Mental Retardation typically involves a physical examination, the taking of a medical history, and genetic testing. Imaging studies such as X-rays can be used to assess the structure of the extra digits. Intellectual assessment may also be conducted to evaluate the extent of mental retardation.

Treatment[edit | edit source]

Treatment for Postaxial Polydactyly Mental Retardation is symptomatic and supportive. Surgical removal of the extra digits may be considered to improve function and appearance. Early intervention programs, special education, and therapy (such as speech therapy, occupational therapy, and physical therapy) can help individuals achieve their maximum potential.

Prognosis[edit | edit source]

The prognosis for individuals with Postaxial Polydactyly Mental Retardation varies depending on the severity of the intellectual disability and the presence of other associated anomalies. With appropriate support and interventions, many individuals can lead productive lives.

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Contributors: Prab R. Tumpati, MD