Vertical ophthalmoplegia due to a unilateral periaqueductal gray matter infarct in an adolescent.
نویسندگان
چکیده
Brainstem strokes affecting the periaqueductal gray matter of the midbrain can cause vertical ophthalmoplegia. Accompanying clinical features are frequently associated and reflect the involvement of other brainstem structures. We report on an adolescent presenting with vertical gaze palsy and left mydriatic pupil as the only clinical expression of a small infarct located in the left periaqueductal gray matter. Even when the lesion was strictly unilateral, vertical ophthalmoplegia affected both eyes.
منابع مشابه
Comparing the analgesic effects of periaqueductal gray matter injection of orexin A and morphine on formalin- induced nociceptive behaviors.
Introduction: Orexin-A and B (Hypocretin 1 and 2) are neuropeptides that are mostly expressed in the posterior and lateral hypothalamus (LH). Intracisternal (ICV) and intratechal (IT) injections of orexin-A (hypocretin-1) have been shown to elicit analgesic responses in formalin test. However, the locations of central sites that may mediate these effects have not been clearly elucidated. Ore...
متن کاملAtypical Wernicke's encephalopathy with remarkable cerebellar lesions on diffusion-weighted MRI.
sphere and posterior vermis, simulating acute bilateral cerebellar infarctions ( fig. 1 A). An initial diagnosis was made based on a history of chronic alcohol abuse, with typical symptoms that included altered mental state and ophthalmoplegia, and combined lesions on bilateral thalamus and periaqueductal gray matter on DWI ( fig. 1 B). Immediate administration of 300 mg thiamine commenced. On ...
متن کاملAlcoholic pellagra encephalopathy combined with Wernicke disease.
Clinical and postmortem findings of a case that had combined alcoholic pellagra encephalopathy and Wernicke disease are described. This 51-year-old malnourished and chronic alcoholic man presented with progressive mental deterioration, pellagra dermatitis, hypertonus of the neck and other musculatures, myoclonic jerks with bizarre involuntary movements, in addition to total external ophthalmopl...
متن کاملThe effect of intracerebroventricular injection of CGRP on pain behavioral responses and monoamines concentrations in the periaqueductal gray area in rat
Objective(s): Calcitonin gene related peptide (CGRP) receptors are widely distributed in the central nervous system. The aim of this study was to investigate the effects of intracerebroventricular (ICV) injection of CGRP on pain behavioral responses and on levels of monoamines in the periaqueductal gray area (PAG) during the formalin test in rats.Materials and Methods: Twenty-four male rats wer...
متن کاملUnilateral internuclear ophthalmoplegia with upbeat nystagmus from ischemic origin: evidence for the paramedian tract neurons as a vertical neural integrator?
Only a few cases with unilateral internuclear ophthalmoplegia have been reported presenting vertical nystagmus, and few of them provides convincing evidence for the paramedian tract neuron to be a vertical neural integrator. We report a patient who suffered from confined dorsal mid-upper pontine infarction showing unilateral internuclear ophthalmoplegia with upbeat nystagmus in primary position...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of child neurology
دوره 25 12 شماره
صفحات -
تاریخ انتشار 2010