TABLE 1

Medical Problems Common in Down Syndrome

Condition%
Hearing problems75
Vision problems60
Cataracts15
Refractive errors50
Obstructive sleep apnea50–75
Otitis media50–70
Congenital heart disease40–50
Hypodontia and delayed dental eruption23
Gastrointestinal atresias12
Thyroid disease4–18
Seizures1–13
Hematologic problems
    Anemia3
    Iron deficiency10
    Transient myeloproliferative disorder10
    Leukemia1
Celiac disease5
Atlantoaxial instability1–2
Autism1
Hirschsprung disease<1