[Clinical procedures in brain infarct and differential diagnosis]

The outcome of stroke improves significantly, when recognized and treated within 3 hours and in certain cases not later than 6 hours. In addition, secondary preventive measures potentially ameliorate the fate of the patient as well, especially when the cause of stroke is known. In this first article we outline the practical diagnosis and evaluation of stroke, both in the acute stage and thereafter. The differential diagnosis is also considered.