Sietske N. Heyn is a medical writer with a PhD in neuroscience. Dr. Heyn's education includes a BS with honors from the University of Oregon, and a doctoral degree in neuroscience from the University of California at Davis. After completing postdoctoral training at the University of California, San Francisco, and many years of working as a medical writer at the Stanford University Center for Down Syndrome Research, Dr. Heyn now runs her own medical writing business.
Dr. Perlstein received his Medical Degree from the University of Cincinnati and then completed his internship and residency in pediatrics at The New York Hospital, Cornell medical Center in New York City. After serving an additional year as Chief Pediatric Resident, he worked as a private practitioner and then was appointed Director of Ambulatory Pediatrics at St. Barnabas Hospital in the Bronx.
Gastrointestinal abnormalities also occur quite frequently in Down syndrome.
tracheoesophageal fistula, duodenal atresia or stenosis,
Hirschsprung's disease, and
imperforate anus are some of the more common
conditions. Approximately 5% to 15% of people with Down syndrome develop
disease. Surgery may be necessary for some of these gastrointestinal conditions.
Children with Down syndrome are also at an increased risk of developing acute
myeloid leukemia, and
testicular cancer; however, the
risk of developing most solid tumors is reduced in individuals with Down
Coexisting psychiatric and behavior disorders occur in about 18%
to 38% of
individuals with Down syndrome. These include
attention deficit hyperactivity
disorder (ADHD), autism spectrum disorders, stereotypical movement disorders,
obsessive compulsive disorder
(OCD), and depression.