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subarachnoid hemorrhage

bleeding into the subarachnoid space surrounding the brain. It may be the result of trauma or a ruptured aneurysm. Initial symptoms are caused by increasing intracranial pressure and can include headache and loss of consciousness as escaping blood distends the spaces beneath the arachnoid (see cisterna), causing compression or spasm of the blood vessels of the thalamus and upper brainstem.

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Psychology term of the day

May 9th 2024

ecosystemic approach

ecosystemic approach

an approach to therapy that emphasizes the interaction between the individual or family and larger social contexts, such as schools, workplaces, and social agencies. The approach emphasizes interrelatedness and interdependency and derives from diverse fields, including psychology, sociology, anthropology, economics, and political science. Family therapy in particular, has made use of this approach in designing interventions for complex families and systems. See also ecological systems theory. [developed in psychology by Urie Bronfenbrenner]