The cause of the thickening is unknown, although genetic factors may play a role. It occurs more commonly in males than in females. Approximately 1 out of 4,000 infants is affected.
Symptoms appear several weeks after birth.
The information provided herein should not be used for diagnosis or treatment of any medical condition. It is provided for your general information and is not a substitute for medical care or supervised medical treatment. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. There is no warranty that the information is free from errors and omissions or that it meets any particular standard. The information herein is reviewed on an ongoing basis and the database is updated quarterly.