Macrodactyly Symptoms & Causes

What causes macrodactyly?

Researchers do not know why macrodactyly occurs, but they believe that it doesn’t result from anything the mother did (or didn’t do) during her pregnancy. Although babies are born with the condition, macrodactyly is not inherited.

It can occur in association with other conditions and syndromes, including:

What are the symptoms of macrodactyly?

One or more of your child’s fingers or toes will be much larger than his other fingers or toes. Macrodactyly is more commonly considered static, which means that the enlarged finger or toe grows at the same rate as the normal finger or toe on your child’s hand.

However, it can also be progressive, with the affected digits growing faster than the rest of the hand. In the static type, your child’s involved digits will generally be about one-and-a-half times the length and width of the normal digits. If the condition is progressive, the involved digit or digits can become enormous.