Carbamazepine-induced heart block in a child with tuberous sclerosis and cardiac rhabdomyoma: implications for evaluation and follow-up.

We describe a young child with tuberous sclerosis and cardiac rhabdomyoma who developed reversible heart block after being placed on carbamazepine treatment for seizures. Patients of any age with known or suspected intrinsic cardiac disease should be monitored for conduction disturbance if they are treated with carbamazepine.