Long, slender fingers can be a normal variation, not associated with any medical problems. However, in some cases, the tendency to develop spider fingers can indicate an underlying hereditary disorder.

• normal finding
• Marfan's syndrome
• homocystinuria
• spondylocostal dysostosis

Some children are born with arachnodactyly, although it may develop over time. Consult with your health care provider during a routine examination if your child has long, slender fingers and you are concerned that an underlying condition may exist.

The medical history will be obtained and a physical examination performed.

Medical history questions documenting arachnodactyly in detail may include:

• time pattern
  • When did you first notice the fingers being shaped like this?
• family history
  • Is there any family history of early death?
  • Is there any family history of known hereditary disorders?
• other
  • What other symptoms are also present?
  • Have you noticed any other unusual things?

The physical examination may include thorough inspection for other indications that a hereditary disorder may be present. Diagnostic tests are usually not necessary unless a hereditary disorder is suspected.