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Spectral Doppler waveform shows early systolic deceleration pattern in the left vertebral artery. (Contributed by Dr. Douglas Lanska.)
Jun. 01, 2020
Oct. 05, 2021
Epilepsy & Seizures
Seizure is defined as "a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain." First seizure (single or multiple events within 24 hours) represents a frequent presentation of new-onset seizures, accounting for up to a third of such presentations. However, the majority of these patients will not go on to have recurrent seizures, ie, epilepsy.
May. 25, 2020
Mar. 03, 2020
Hemiballism refers to flinging movements of the upper and lower limbs on one side of the body. Onset of hemiballism is usually acute and is most commonly due to ischemic stroke, hemorrhage, autoimmune disorders, medications, metabolic abnormalities (most commonly hyperglycemia), neoplasms, or infections. Treatment is usually symptomatic, unless a reversible cause can be identified and corrected.
Oct. 22, 2020
Childhood Degenerative & Metabolic Disorders
Smith-Lemli-Opitz syndrome is an autosomal recessive multiple congenital malformation that is associated with intellectual disability. The primary defect
Apr. 09, 2021
Neuro-Ophthalmology & Neuro-Otology
Toxic or nutritional optic neuropathy is classically characterized by gradual painless progressive vision loss, bilateral central or cecocentral scotomas, marked dyschromatopsia, loss of high spatial frequency contrast sensitivity, temporal pallor, and loss of papillomacular bundle. A thorough history of medication use, toxic exposure, substance abuse, dietary deficiency, past surgeries, family history, and peripheral neurologic symptoms should be documented. Early recognition, removal of toxic agents, and supplementation of nutritional deficiencies may lead to protracted visual recovery.
Feb. 13, 2020
In this clinical article, the authors describe the different manifestations of this inborn error of leucine catabolism and explain pathophysiology, disease
Aug. 20, 2019