10/08/2026
"It's just Down syndrome."
Unfortunately, many families have heard this statement after describing a behavior change or new symptom that they have noticed their loved one with Down syndrome experiencing. In medical care, this is called diagnostic overshadowing. When a healthcare professional overshadows with regards to Down syndrome, the professional focuses primarily (or only) on the fact that the person has Down syndrome and less on the possibility of a co-occurring health condition. Diagnostic overshadowing can lead to misdiagnosis or underdiagnosis of potentially treatable health conditions.
National Down syndrome organizations have developed (and continue to develop) resources to educate healthcare professionals about health of people with Down syndrome, including Down Syndrome Project ECHO and Learning Library from the Down Syndrome Medical Interest Group - USA and CARE Down Syndrome from the National Down Syndrome Society. Sharing these resources is one way to reduce the likelihood of experiencing diagnostic overshadowing.
See our Resource Library to learn more about diagnostic overshadowing and find links to Down syndrome resources for healthcare professionals.
π https://adultdownsyndrome.org/news/down-syndrome-awareness-month-october-8-2026/