- About 40 percent to 50 percent of babies with Down syndrome have heart defects. Some defects are minor and may be treated with medications, while others may require surgery. All babies with Down syndrome should be examined by a pediatric cardiologist, a physician who specializes in heart diseases of children, and have an echocardiogram (a procedure that evaluates the structure and function of the heart by using sound waves recorded on an electronic sensor that produce a moving picture of the heart and heart valves) in the first two months of life, so that any heart defects can be treated.
- About 10 percent of babies with Down syndrome are born with intestinal malformations that require surgery.
- Children with Down syndrome are at increased risk for visual or hearing impairment. Common visual problems include crossed eyes, near- or farsightedness, and cataracts. Most visual problems can be improved with glasses, surgery, or other treatments. A pediatric ophthalmologist (a physician who specializes in comprehensive eye care and provides examinations, diagnosis, and treatment for a variety of eye disorders) should be consulted within the first year of life.
- Children with Down syndrome may have hearing loss due to fluid in the middle ear, a nerve defect, or both. All children with Down syndrome should have regular vision and hearing examinations so any problems can be treated before they hinder development of language and other skills.
- Children with Down syndrome are at increased risk of thyroid problems and leukemia. They also tend to have many colds, as well as bronchitis and pneumonia. Children with Down syndrome should receive regular medical care including childhood immunizations. The National Down Syndrome Congress publishes a "Preventative Medicine Checklist" which outlines which checkups and medical tests are recommended at various ages.