The BBC reports that some expert claims that some people with strokes on the right-side of their brains may be going undiagnosed. This is because right-sided strokes are less obvious and don't usually impact speech like left-sided strokes.
Dr Christian Foerch and colleagues at the Johann Wolfgang Goethe University in Frankfurt looked at stroke data for over 20,000 patients between 1997 and 2002.
They found more of the recorded cases were left-sided strokes than right-sided ones - 11,300 cases compared to 8,700 cases, respectively.
Dr Foerch's team does not believe left-sided strokes are more common than right-sided ones but instead that strokes on the right of the brain are more often missed.
Compared to those with right-handed strokes, the patients affected on the left of the brain were more likely to get the right treatment and be admitted to hospital within three hours of their symptoms starting.
