Articles: middle-aged.
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Analysis of the effect of hemorheologic factors on middle cerebral artery (MCA) blood flow velocity in 55 healthy individuals aged 18 to 30 years demonstrated an inverse association between mean MCA blood flow velocity and hematocrit (r = -0.27, p < 0.05). This association was largely explained by the effect of whole-blood viscosity. Neither fibrinogen concentration nor plasma viscosity were significantly associated with MCA blood flow velocity in this group; this lack of a fibrinogen association is in contrast to results previously obtained in elderly individuals where an inverse association was observed. These findings thus demonstrate age-dependent differences in the relationship between fibrinogen and MCA blood flow velocity.
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The first type of facial pain is of vascular origin. Cluster headache is described as well as its subgroups and carotidodynia. Two organic lesions of the arterial wall can also cause facial pain: dissection of the internal carotid artery and giant cell arteritis. ⋯ Also, local lesions in the cranial nerves can cause facial pain, as well as organic processes of the upper cervical spine and of the occipitocervical transition. The characteristics of facial pain due to eye or ENT and dental lesions are described. So called atypical facial pain occurs quite frequently and mostly affects middle-aged women.