When the aging brain misfires, the results can be astonishing and a little alarming.

More than 100 years after it was first described, hemineglect—also known as unilateral spatial neglect, or unilateral inattention—is still one of the most fascinating and mysterious of the ...

Credit: Getty Images Some rare psychological disorders may occur so infrequently that most mental health professionals might never encounter them. Approximately 1 of every 5 adults in the United ...