What Is DiGeorge Syndrome?

DiGeorge syndrome is the 22q11 monomer syndrome, caused by the deletion of a small segment on chromosome 22. The disease is one of the common micro-deficiency syndromes that cause mental retardation in children. Its incidence is second only to Down's syndrome, and it is the second largest genetic cause of congenital heart disease. Because the child is often accompanied by epicondylosis, heart and facial deformities, it is called patellar heart-face syndrome.