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Cervicocerebral artery dissection (CAD) is “a common rare disease,” with an annual incidence of 2.6 to 2.9 patients per 100 000 people. In adults younger than 50 years of age, ∼15% of all ischaemic strokes are caused by CAD, while cardioembolism, representing a wider spectrum of pathological conditions, explain ∼20% of cases.
Arnold et al1 report the results of two studies, contributing to our understanding of the characteristics of CAD (see page 171). They …
Competing interests: None.