PSYC31H3 : Ch8
Document Summary
impaired higher level and complex reasoning- conceptual concretism, inflexibility. Emotional flattening or lability (constantly undergoing change) These symptoms most severe immediately after injury or early stages of sudden onset disease or first appear as subtle transient problems that increase in duration and severity as condition worsens. Symptoms almost always accompany focal lesions of sudden onset. I. e. cloudy consciousness, confusion, slowed responsiveness may obscure focal residual effects evidence focal injury won"t known until later. Ultimately, diffuse effects resulting from increased intracranial pressure and circulatory changes may obliterate specific defects due to local tissue damage. Cause most: trauma, space displacing lesions (i. e. tumors, blood vessel malformations), localized infections, cerebrovascular accidents. Systemic conditions too severe thiamine deficiency. Occasionally accompany acute exacerbation of systemic disorder i. e. diabetes confusing the diagnostic picture until underlying disorder brought under control and organic symptoms subside. Distinguished by lateralizing signs since most discrete lesions involve only one hemisphere.
