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Symptoms. The symptoms and signs associated with convergence insufficiency are related to prolonged, visually demanding, near-centered tasks. They may include, but are not limited to, diplopia (double vision), asthenopia (eye strain), transient blurred vision, difficulty sustaining near-visual function, abnormal fatigue, headache, and abnormal postural adaptation, among others.
The International Classification of Headache Disorders ( ICHD) is a detailed hierarchical classification of all headache -related disorders published by the International Headache Society. [1] It is considered the official classification of headaches by the World Health Organization, and, in 1992, was incorporated into the 10th edition of their ...
New daily persistent headache ( NDPH) is a primary headache syndrome which can mimic chronic migraine and chronic tension-type headache. The headache is daily and unremitting from very soon after onset (within 3 days at most), usually in a person who does not have a history of a primary headache disorder. The pain can be intermittent, but lasts ...
Parinaud's syndrome is a constellation of neurological signs indicating injury to the dorsal midbrain. More specifically, compression of the vertical gaze center at the rostral interstitial nucleus of medial longitudinal fasciculus (riMLF). It is a group of abnormalities of eye movement and pupil dysfunction and is named for Henri Parinaud [6 ...
International Headache Society Migraine without aura, classified as common migraine, represents a recurrent headache disorder characterized by moderate to severe throbbing pain, typically unilateral, and devoid of preceding visual or sensory disturbances known as auras. This neurological condition, affecting a significant portion of the population, manifests with a range of symptoms, including ...
Bronchial hyperresponsiveness (or other combinations with airway or hyperreactivity, BH used as a general abbreviation) [1] is a state characterised by easily triggered bronchospasm (contraction of the bronchioles or small airways). Bronchial hyperresponsiveness can be assessed with a bronchial challenge test. This most often uses products like ...
Menstrual migraine. Menstrual migraine (also called catamenial migraine) is the term used to describe both true menstrual migraines and menstrually related migraines. About 7%–14% of women have migraines only at the time of menstruation. These are called true menstrual migraines. Most female migraineurs experience migraine attacks throughout ...
A thunderclap headache is a headache that is severe and has a sudden onset. It is defined as a severe headache that takes seconds to minutes to reach maximum intensity. [1] [2] Although approximately 75% are attributed to "primary" headaches—headache disorder, non-specific headache, idiopathic thunderclap headache, or uncertain headache ...