Extra, fused, or curved fingers or toes

Overview

Extra fingers or toes (polydactyly), joined ones (syndactyly), and curved fingers are among the most common birth differences.

Most happen alone; sometimes they're part of a genetic condition, so doctors look for other signs.

Symptoms

Common signs:

• Extra, joined, or curved fingers or toes

Less common

• Extra digit with no bone

When to get medical care

Causes

Genes.

Does it spread or run in families?

• It isn't contagious. You can't catch it from someone else.
• It can run in families. Tell your doctor if a parent, brother, or sister has it.

Who is more likely to get it

• Family history

Diagnosis

Exam and X-ray.

Tests

Tests, if needed:

• X-ray:

Treatment

See a hand specialist.

Self-care

• Protect a small extra digit from catching on clothing
• See a hand or foot specialist in the first months

Prevention

To lower your risk or prevent problems:

• There is no known way to prevent it. Early checkups help find it sooner.

Which doctor treats this

• Start with your primary care provider (family doctor or internist).

Children, pregnancy, and older adults

• Families: Often runs in families.

Pregnancy and breastfeeding

• If you're pregnant or planning to be, tell your prenatal provider about this condition.
• Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
• Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
• Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

Outlook

Fixable.

Surgery usually gives good results.

Getting ready for your visit

Bring a list of your symptoms and medicines.

Questions to ask

• When is the best time for surgery?
• Should we have genetic testing?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Extra, fused, or curved fingers or toes