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Comparing ERG responses in dark (scotopic) and light (photopic) conditions. (Contributed by Dr. Rosa Ana Tang.)
Childhood Degenerative & Metabolic Disorders
Mar. 04, 2021
Neurologic paraneoplastic disorders are relatively rare but often disabling complications of a variety of systemic neoplasms. Most, if not all, paraneoplastic disorders are believed to be caused by an autoimmune reaction against shared "onconeural" antigens, though the exact pathogenesis of most syndromes remains unclear. In most patients with paraneoplastic disorders, the neurologic symptoms are the presenting feature of an otherwise undiagnosed tumor.
Sep. 21, 2020
Becker muscular dystrophy primarily causes progressive skeletal and cardiac muscle degeneration. Common presentations include proximal muscle weakness or myalgias, cardiomyopathy, elevated serum levels of creatine kinase, or, more rarely, malignant hyperthermia after exposure to halothane anesthesia. It is an X-linked recessive neuromuscular disease.
Dec. 07, 2020
Epilepsy & Seizures
Generalized onset tonic-clonic seizures are the most dramatic, severe, and common seizures of syndromes of idiopathic generalized epilepsy. They manifest with violent generalized convulsions, loss of consciousness, and marked autonomic disturbances. They are usually spontaneous, but they may also be provoked by external, mainly photic, stimuli. They are often associated with severe complications that may also be fatal.
Jun. 30, 2021
Behavioral & Cognitive Disorders
Alzheimer disease (AD) is the most common cause of late-life dementia; it can begin either in individuals aged 65 years or less (early onset) or after
Oct. 28, 2013
General Child Neurology
Toxoplasma gondii is an important cause of congenital infections. When the infection occurs during pregnancy, the parasite can cross the placenta and
Mar. 24, 2021
Nov. 24, 2020
Stroke & Vascular Disorders
Since their introduction, hormonal contraceptives have been associated with an increased risk of stroke. Oral contraceptives may increase the risk of ischemic stroke, although the absolute risk remains very small. Oral contraceptives do not seem to increase the risk of hemorrhagic stroke in the general population. However, they should not be offered to women with migraine with aura.
Feb. 12, 2019