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Normal electroretinogram showing the anatomical correlates of the B-wave, oscillatory potential (OP) and A-wave. (Contributed by Dr. Rosa ana Tang.)
Childhood Degenerative & Metabolic Disorders
Aug. 06, 2021
Stroke & Vascular Disorders
Acute pituitary apoplexy typically begins with sudden severe headache, followed by nausea, vomiting, visual disturbance, and neurologic symptoms including meningeal irritation, fever, clouding of consciousness, or coma. Pattern of tumor growth, size of the tumor, and amount of hemorrhage and edema in the gland all determine initial presenting symptoms.
Oct. 21, 2020
General Child Neurology
Acute cerebellar ataxia in children typically presents with sudden onset of unsteadiness, gait difficulties, and nystagmus, usually following an acute viral illness or vaccination. Headache, photophobia, and lightheadedness may also occur. Varicella, Epstein-Barr virus, influenza, and mycoplasma can be causes.
Apr. 05, 2021
Jun. 22, 2021
Both the calvarium and skull base can be affected by a variety of benign, tumor-like, and malignant processes. Calvarial metastases are usually asymptomatic and discovered incidentally on radiographic studies. Skull base metastatic lesions commonly present with pain. Lung, breast, prostate, multiple myeloma and solitary plasmacytoma, and head/neck cancer account for most cases of skull metastases.
Mar. 29, 2018
Neuropharmacology & Neurotherapeutics
Sep. 04, 2021
Sarcoidosis is associated with virtually all peripheral neuropathy subtypes, and patients can have motor, sensory, sensorimotor, or autonomic neuropathy. Patterns of neurologic involvement include cranial neuropathies, meningeal disease, hydrocephalus, CNS parenchymal disease, neuropathy, and myopathy.
Aug. 17, 2021
Transverse myelitis is part of a spectrum of demyelinating disease but has unique features that differentiate it from multiple sclerosis. The spinal cord damage in acute complete transverse myelitis generally affects all cord functions, and the symptoms are typically more severe than in typical cord lesions of multiple sclerosis. The first symptoms in transverse myelitis are ascending paresthesias or back pain at the level of the myelitis, plus leg weakness and sphincter dysfunction. Tingling or paresthesias in the feet soon progress to loss of pain, temperature, and vibration sensation, and then halt at a sensory level, usually thoracic (approximately 80%).
Aug. 05, 2016