Bengt A. Edvardsson

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A 73-year-old man presented with a thunderclap headache (TCH), suggesting a subarachnoid haemorrhage. Neurological examination, computer tomography of the head, and cerebrospinal fluid examination were normal. Magnetic resonance imaging of the brain revealed a supratentorial cerebral infarct. No cerebral aneurysm could be detected. A TCH can be the(More)
INTRODUCTION Cluster headache (CH) is a primary headache by definition not caused by any known underlying structural pathology. However, symptomatic cases have been described. The evaluation of CH is an issue unresolved. CASE REPORT A 41-year-old man presented with a 3-month history of side-locked attacks of excruciating severe stabbing and boring(More)
We determine the metallicity distribution function (MDF) of the Galactic halo by means of a sample of 1638 metal-poor stars selected from the Hamburg/ESO objective-prism survey (HES). The sample was corrected for minor biases introduced by the strategy for spectroscopic follow-up observations of the metal-poor candidates, namely " best and brightest stars(More)
Serial MRI including diffusion and perfusion imaging was performed in a patient with hypertensive encephalopathy. At admission, the patient was disorientated and presented with seizures and cortical blindness. Perfusion imaging showed a marked reduction in blood volume and flow, with corresponding vasogenic oedema in the occipital, posterior temporal, and,(More)
Sir, Cluster headache (CH) is a primary headache, by definition not caused by any underlying structural pathology and belonging to the group of trigeminal-autonomic cephalal-gias [1]. CH is the most frequent syndrome in this group. Although uncommon, symptomatic cases of CH have been described, e.g. tumours, particularly pituitary adenomas, malformations,(More)
INTRODUCTION Cluster headache belongs to a group of primary headache entities: the trigeminal autonomic cephalalgias. Cluster headache is the most common variant. The headache is usually severe and it is also associated with autonomic symptoms. Secondary causes of cluster headache have been reported, such as intracranial artery aneurysms and tumors. The(More)
A 32-year-old man with a residual spastic quadriparesis from a traumatic C5-C6 fracture experienced a severe thunderclap headache. The medical history revealed an episode of autonomic dysreflexia (AD) due to neurogenic bladder/urinary tract infection (UTI). Blood pressure monitoring at admission revealed hypertension; blood pressure reaching 160/100 mmHg(More)