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Reversible cerebral vasoconstriction syndrome (RCVS, sometimes called Call-Fleming syndrome) is a disease characterized by a weeks-long course of thunderclap headaches, sometimes focal neurologic signs, and occasionally seizures. [1] Symptoms are thought to arise from transient abnormalities in the blood vessels of the brain. [1]
RCVS may refer to: Royal College of Veterinary Surgeons; Reversible cerebral vasoconstriction syndrome This page was last edited on 29 ...
High resolution MRI may show hyperenhancement of the blood vessel walls in primary CNS vasculitis and may help to distinguish the lesions form atherosclerotic plaques or reversible cerebral vasoconstriction syndrome which have similar morphology on angiography. MRI usually also shows multiple infarcts, enhancement of the leptomeninges (the ...
In many cases there is evidence of constriction of the blood vessels (if angiography is performed), suggesting a possible overlap with reversible cerebral vasoconstriction syndrome (RCVS). Diffusion MRI may be used to identify areas of cytotoxic edema caused by poor blood flow (ischemia) but it is not clear if this prognostically relevant.
Posterior reversible encephalopathy syndrome (PRES) is a rare clinical disease characterized by cerebral edema. [12] The exact pathophysiology , or cause, of the syndrome is still debated but is hypothesized to be related to the disruption of the blood-brain barrier. [ 12 ]
Mayo Clinic Proceedings is a monthly peer-reviewed medical journal published by Elsevier and sponsored by the Mayo Clinic. It covers the field of general internal medicine. The journal was established in 1926 as the Proceedings of the Staff Meetings of the Mayo Clinic and obtained its current name in 1964.
Vasospasm refers to a condition in which an arterial spasm leads to vasoconstriction. This can lead to tissue ischemia (insufficient blood flow) and tissue death . Along with physical resistance, vasospasm is a main cause of ischemia. Like physical resistance, vasospasms can occur due to atherosclerosis.
Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles. The process is the opposite of vasodilation , the widening of blood vessels.