A thunderclap headache. Post-partum cerebral angiopathy. Sub-arachnoid hemorrhagic headache. Posterior reversible encephalopathy. Primary and benign angiopathies of the central nervous system. Call-Fleming syndrome. I am not throwing the dictionary at you. These are all sudden onset headaches resulting from changes in the flow of blood in cerebral arteries. Recent opinion tends to aggregate all these kinds of headaches under a common term, Reversible Cerebral Vasoconstriction Syndrome (RCVS).
Excess food intake makes you fat. High calorie foods make you gain excess fat. Excess carbohydrates and saturated fatty acids get taken up by fat cells and get converted into fatty acids stored within them. This is what we know of the straightforward relationship between diet and obesity. Yet, the relationship between food choices and obesity is not so linear or short-term. Food choices and obesity have a more complex interdependence.
The CDC estimated a 1% worldwide prevalence for autism spectrum disorders (ASD). In the United States, 1 out of 88 kids is diagnosed with ASD (according to data from a survey conducted in 2008). Autism spectrum disorders are characterized by diminished social interaction skills, stereotypic engagement in repetitive tasks, lengthy visual engagement with a target, refusal to deviate from set rituals and diminished spontaneity in expressing emotions. In addition to behavioral difficulties, reduced motor abilities are also reported.
Rescuing a patient from a stroke and restoring cognitive functions are two significant medical challenges today. Blockage of a brain artery, usually by a clot or atherosclerotic plaque, results in reduction in oxygen supply to brain cells. If the supply of oxygen is interrupted for a long time, brain cells die resulting in severe loss of motor and cognitive functions. Therapeutic approaches to prevent the formation of plaques or blood clots are not a hundred percent successful in preventing a stroke. Recent research has focused on aiding regeneration of brain cells after an ischemic stroke and stem cells have been used with reasonable success.
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