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A vascular headache is an outdated term to describe certain types of headache which were thought to be related to blood vessel swelling and hyperemia as cause of pain. [ citation needed ] There is no doubt that some headaches are caused by vascular effects.
These headaches are typically bilateral, very severe and peak in intensity within a minute. [1] They may last from minutes to days, and may be accompanied by nausea, photophobia, phonophobia or vomiting. [1] Some patients experience only one headache, but on average there are four attacks over a period of one to four weeks. [1]
Water, like any other substance, can be considered a poison when over-consumed in a brief period. Water intoxication mostly occurs when water is being consumed in a high quantity provoking disturbances in electrolyte balance. [2] Excess of body water may also be a result of a medical condition or improper treatment; see "hyponatremia" for some ...
Individuals with cerebral edema had a worse 3-month functional outcome than those without edema. [9] These effects were more pronounced with increasing extent of cerebral edema and were independent of the size of the infarct. [9] Mild traumatic brain injury (TBI) represents 70–90% of all reported head injuries. [34]
After migraine, the most common type of vascular headache is the "toxic" headache produced by fever. Other kinds of vascular headaches include cluster headaches, which are very severe recurrent short lasting headaches, often located through or around either eye and often wake the patients up at the same time every night. Unlike migraines, these ...
The mechanism that leads to vasoconstriction results from the increased concentration of calcium (Ca 2+ ions) within vascular smooth muscle cells. [2] However, the specific mechanisms for generating an increased intracellular concentration of calcium depends on the vasoconstrictor.
When starting to suffer from fever, headache, nausea, or vomiting subsequent to any kind of exposure to fresh water, even in the belief that no fresh water has traveled through the nostrils, people with such conditions should be carried to hospital quickly and make sure doctors are well-informed about the history of exposure to fresh water. [24]
The vascular anatomy of the heart and brain is similar in that conduit arteries are distributed on the surface of these organs with tissue perfusion achieved through deep penetrating arteries. Both coronary and cerebral microvascular diseases do share some common risk factors such as hypertension.