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Cerebral edema is a potentially life-threatening complication of severely decreased sodium ion concentration in the blood (hyponatremia). [17] Ionic brain edema can also occur around the sites of brain hemorrhages, infarcts, or contusions due to a local plasma osmolality pressure gradient when compared to the high osmolality in the affected tissue.
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.
Clinical signs of cerebral edema, such as focal neurological deficits, papilledema [5] and decreased level of consciousness, if temporally associated with recent hemodialysis, suggest the diagnosis. A computed tomography of the head is typically done to rule-out other intracranial causes.
An increase in pressure, most commonly due to head injury leading to intracranial hematoma or cerebral edema, can crush brain tissue, shift brain structures, contribute to hydrocephalus, cause brain herniation, and restrict blood supply to the brain. [13] It is a cause of reflex bradycardia. [14]
Edema (American English), also spelled oedema (British English), and also known as fluid retention, dropsy and hydropsy, is the build-up of fluid in the body's tissue, [1] a type of swelling. [4] Most commonly, the legs or arms are affected. [1] Symptoms may include skin that feels tight, the area feeling heavy, and joint stiffness. [1]
[1] [6] Up to 1% of children with DKA develop a complication known as cerebral edema. [2] Rates of cerebral edema in US children with DKA have risen from 0.4% in 2002 to 0.7% in 2012. [44] Between 2 and 5 out of 10 children who develop brain swelling will die as a result. [10]
Cerebral edema (swelling of the brain) Headache that does not respond to analgesics Unsteady gait Gradual loss of consciousness Increased nausea and vomiting Retinal hemorrhage. The most serious symptoms of altitude sickness arise from edema (fluid accumulation in the tissues of the body).
Edema, or swelling, of the brain may occur which increases intracranial pressure and may result in brain herniation. A stroke may result in coma or death if it involves key areas of the brain. [14] Other symptoms of cerebrovascular disease include migraines, seizures, epilepsy, or cognitive decline.