A birth defect, also known as a congenital disorder, is an abnormal condition that is present at birth regardless of its cause. Birth defects may result in disabilities that may be physical, intellectual, or developmental. The disabilities can range from mild to severe. Birth defects are divided into two main types: structural disorders in which problems are seen with the shape of a body part and functional disorders in which problems exist with how a body part works. Functional disorders include metabolic and degenerative disorders. Some birth defects include both structural and functional disorders.

जन्म दोष या जन्म के दोष किसी बच्चे के जन्म के समय मौजूद संरचनात्मक या कार्यात्मक असामान्यताएँ हैं जो शारीरिक विकलांगता, बौद्धिक और विकासशील विकलांगता (आईडीडी), और अन्य स्वास्थ्य समस्याओं के कारण हो सकते हैं। कुछ घातक हो सकते हैं, खासकर अगर पता लगाकर जल्दी से इलाज नहीं किया जाता है तो।