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The International Classification of Headache Disorders (ICHD) is a detailed hierarchical classification of all headache-related disorders published by the International Headache Society. [1]
A headache, also known as cephalalgia, is the symptom of pain in the face, head, or neck.It can occur as a migraine, tension-type headache, or cluster headache. [1] [2] There is an increased risk of depression in those with severe headaches.
Cervicogenic headache is a type of headache characterized by chronic hemicranial pain referred to the head from either the cervical spine or soft tissues within the neck. [1] [2] The main symptoms of cervicogenic headaches include pain originating in the neck that can travel to the head or face, headaches that get worse with neck movement, and limited ability to move the neck.
The blood–brain barrier (BBB) is a highly selective semipermeable border of endothelial cells that regulates the transfer of solutes and chemicals between the circulatory system and the central nervous system, thus protecting the brain from harmful or unwanted substances in the blood. [1]
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
A woman keening at a wake in County Kerry in the early nineteenth century, depicted from the memories of Samuel Carter Hall.She had "black, uncombed locks" and a blue cloak, and held her hands above the body then dramatically waved them in the air "as if by sudden inspiration".
Detail of the Old English manuscript of the poem Beowulf, showing the words ofer hron rade (' over the whale's road '), meaning ' over the sea '.. A kenning (Icelandic: [cʰɛnːiŋk]) is a figure of speech, a figuratively-phrased compound term that is used in place of a simple single-word noun.
Kepala Batas (Jawi: كڤالا باتس, Kedahan: Kepala Bataih) is a small town in Kubang Pasu District, Kedah, Malaysia. [1] The Sultan Abdul Halim Airport is ...