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Cerebral edema is excess accumulation of fluid (edema) in the intracellular or extracellular spaces of the brain. [1] This typically causes impaired nerve function, increased pressure within the skull, and can eventually lead to direct compression of brain tissue and blood vessels. [1] Symptoms vary based on the location and extent of edema and ...
Severely high ICP can cause the brain to herniate. Intracranial pressure (ICP) is the pressure exerted by fluids such as cerebrospinal fluid (CSF) inside the skull and on the brain tissue. ICP is measured in millimeters of mercury (mmHg) and at rest, is normally 7–15 mmHg for a supine adult. This equals to 9–20 cmH 2 O, which is a common ...
Cerebral hypoxia is a form of hypoxia (reduced supply of oxygen), specifically involving the brain; when the brain is completely deprived of oxygen, it is called cerebral anoxia. There are four categories of cerebral hypoxia; they are, in order of increasing severity: diffuse cerebral hypoxia (DCH), focal cerebral ischemia, cerebral infarction ...
2 per 100,000 per year [4] Idiopathic intracranial hypertension (IIH), previously known as pseudotumor cerebri and benign intracranial hypertension, is a condition characterized by increased intracranial pressure (pressure around the brain) without a detectable cause. [2] The main symptoms are headache, vision problems, ringing in the ears, and ...
7.7 million (2019) [9] Deaths. 236,000 (2019) [9] Meningitis is acute or chronic inflammation of the protective membranes covering the brain and spinal cord, collectively called the meninges. [10] The most common symptoms are fever, intense headache, vomiting and neck stiffness and occasionally photophobia. [1]
Intracranial hemorrhage [1] Posterior reversible encephalopathy syndrome (PRES), also known as reversible posterior leukoencephalopathy syndrome (RPLS), is a rare condition in which parts of the brain are affected by swelling, usually as a result of an underlying cause. Someone with PRES may experience headaches, changes in vision, and seizures ...
Hypernatremia, also spelled hypernatraemia, is a high concentration of sodium in the blood. [3] Early symptoms may include a strong feeling of thirst, weakness, nausea, and loss of appetite. [1] Severe symptoms include confusion, muscle twitching, and bleeding in or around the brain. [1][2] Normal serum sodium levels are 135–145 mmol/L (135 ...
High-altitude cerebral edema. High-altitude cerebral edema (HACE) is a medical condition in which the brain swells with fluid because of the physiological effects of traveling to a high altitude. It generally appears in patients who have acute mountain sickness and involves disorientation, lethargy, and nausea among other symptoms.