A study of people with Down syndrome and Alzheimer's disease highlights the importance of amyloid. But it also shows that's not the only factor.

Among patients with Down syndrome, lorazepam and electroconvulsive therapy both resulted in reduced behavioral symptoms of catatonia over time.

Scientists used stem cell-based models to pinpoint a gene linked to impaired memory in Down syndrome. The discovery could also clarify Alzheimer's disease.

A 36-year-old man endured recurrent sinusitis and pneumonias, yeast infections, and viral infections since childhood. His condition now has a name.

Typically developing young children hang on to information better after a nap, but a new study shows the opposite is true in kids with Down syndrome.