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OCT of optic nerve that shows resolution of papilledema 4 months after diagnosis of pseudotumor cerebri and treatment with acetazolamide. (Contributed by Dr. Rosa Ana Tang.)
May. 15, 2021
Stroke & Vascular Disorders
Dec. 02, 2020
Neuro-Ophthalmology & Neuro-Otology
Benign paroxysmal positional vertigo (BPPV) is the most common vestibular disorder. The cardinal feature of the disorder is disabling vertigo provoked by changes of head position. Several variants have been recognized, reflecting involvement of the posterior, horizontal, or anterior semicircular canal by canalolithiasis or cupulolithiasis.
May. 16, 2021
Headache & Pain
Diffuse, aching head pain without migraine characteristics is the primary symptom of tension-type headache. Sensations of tightness or pressure and muscle pain are also seen. Peripheral and central pain mechanisms both appear to be involved in tension headache, which is the most common type of headache.
Sep. 23, 2019
Childhood Degenerative & Metabolic Disorders
Adrenoleukodystrophy early symptoms can include seizure or behavioral issues, such as hyperactivity or attention deficit disorders, followed by signs of dementia, impaired auditory discrimination, impaired vision, ataxia, and later, signs of corticospinal tract involvement. It combines a genetic defect with an inflammatory brain reaction and adrenal insufficiency.
Dec. 29, 2019
Oct. 21, 2020
Arginase 1 deficiency is an inherited urea cycle disorder that may cause hyperammonemia. Arginase 1 deficiency mainly affects the central nervous system
Oct. 03, 2019
Sexual intercourse and climax may be associated with a marked increase in heart rate and blood pressure, which may cause headache directly or indirectly. Benign headaches or benign coital cephalgia associated with sexual activity are divided into 3 types. The International Headache Society defines preorgasmic headache and orgasmic headache as 2 subtypes of primary headache associated with sexual activity; postorgasmic postural headache is classified as secondary headache.
Aug. 01, 2020