In four patients with symptoms of presumed acute ischaemic stroke intravenous treatment with recombinant tissue plasminogen activator (rtPA) was considered. Two patients indeed received rtPA within 3 hours after onset of symptoms. One of them, a 55-year-old woman, recovered and was able to resume her job as a teacher four months later. The other patient, a 38-year-old man, had a severe bleeding complication that could be stopped, but the patient died several days later because of the massive stroke. The third patient, an 82-year-old woman, could not be treated with rtPA because the time of onset of neurological deficit was uncertain. Nevertheless, she recovered well from her hemiplegia after a few days. The fourth patient, a 24-year-old woman, did not receive rtPA because her symptoms were thought to be the result of a psychogenic disorder. Intravenous thrombolysis increases the risk of intracranial haemorrhage, but should be considered a useful treatment for ischaemic stroke provided there is no doubt about this diagnosis and treatment with rtPA can be started within 3 hours of onset of the neurological deficit.