This fascinating article explores the physiological, pharmacological, and clinical evidence to support the proposal that extracranial vasodilatation is a source of pain in migraine. Headache
The authors present a new algorithm to reduce the cumulative radiation exposure from CT of patients with aneurysmal subarachnoid hemorrhage. American Journal of Roentgenology
An experimental amino acid peptide that targets neurofibrillary tangles appears to improve memory in patients with amnesic mild cognitive impairment. Medscape Medical News