Bone, Joint and Muscle Conditions

Polydactyly Symptoms and Diagnosis

Symptoms of Polydactyly

Children with polydactyly are born with one or more extra fingers or toes.

The extra digit may be:

  • A small, raised bump or a piece of skin that looks like a small finger or toe that isn't fully formed (nubbin)
  • A complete, working finger or toe

For some children, polydactyly is only one feature of a more complex genetic condition or syndrome. These children will have other signs and symptoms.

Polydactyly Diagnosis

If your child is born with an extra finger or toe, the doctor will examine your child carefully. During the exam, the doctor will check for other signs to tell whether your child has a more complex condition.

Your child may need an X-ray to see if there are bones in the extra digit and to see how the extra digit connects to the rest of the hand or foot. If the doctor thinks your child might have other genetic problems, your child might have tests to check their chromosomes.