Gynecomastia is a condition that is caused by a hormonal imbalance in the body. While it can develop at puberty for boys, it may or may not resolve itself by adulthood. Specific prescriptions, illegal drugs, or medical conditions such as hyperthyroidism, kidney failure, or cirrhosis of the liver can cause gynecomastia.
As the use of antipsychotic medications in children has become more common, doctors have seen an increase in cases of gynecomastia. Specifically, Risperdal® (risperidone) has been seen to cause gynecomastia in some children and teens that use the drug for behavior issues.
Currently, there is a movement to petition the FDA to ban Risperdal® for use in children and young adults. The petition claims that long-term results have not been studied sufficiently to allow the drug to be used with these patients.