Up to 12 percent of patients were potentially misdiagnosed at their first visit to the emergency room.
(NBC) - Doctors are more likely to miss the early signs of stroke in women, minorities, and young adults.
Researchers at Johns Hopkins studied hospital discharge records from nine states, and compared them to how many patients were later re-admitted for stroke.
They found up to 12 percent of patients were potentially misdiagnosed at their first visit to the emergency room.
Often those patients were complaining of dizziness or headaches.
They also found women were 30 percent more likely to be misdiagnosed, as were minorities.
The researchers say ER doctors may need to be more vigilant with patients presenting to the hospital with dizziness and headaches, and that there are easy ways to determine if those symptoms are caused by stroke by tracking a patient's eye movements.