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Angiogram anteroposterior projection showing midbasilar artery stenosis. (Contributed by Dr. Jeffrey Saver.)
Dec. 18, 2020
Neuropharmacology & Neurotherapeutics
Mar. 06, 2021
Stroke & Vascular Disorders
Transient ischemic attacks (TIAs) in the vertebrobasilar arterial system comprise one fourth of all TIAs and carry a higher risk of acute stroke than carotid territory TIAs. Vertebrobasilar TIAs often present with unilateral motor or sensory symptoms involving the face or limbs as well as unilateral or bilateral visual field defects. Vertebrobasilar TIAs may be accompanied by vertigo, diplopia, dysarthria, dysphagia, or loss of balance, often in association with any combination of motor or sensory deficits in the face and extremities.
Jan. 07, 2021
Mild traumatic brain injury is arguably one of the most highly publicized neurologic disorders. Immediate signs and symptoms of concussion include vacant stare, delayed verbal and motor responses, confusion and inability to focus attention, disorientation, slurred or incoherent speech, gross observable decrease in coordination, emotions out of proportion to circumstances, memory deficits, or any period of loss of consciousness. Most concussions resolve spontaneously within 10 to 14 days.
Jul. 26, 2019
Amyotrophic lateral sclerosis (ALS), also known as motor neuron disease (MND), is a neurodegenerative disease that causes progressive muscle weakness and fasciculations without sensory loss. Presenting symptoms can be bulbar, cervical, thoracic, or lumbosacral.
Jun. 28, 2019
A transient ischemic attack (TIA) is defined as an acute focal neurologic deficit that is localized to one vascular territory, lasting less than 24 hours, with abrupt onset and abrupt or gradual resolution. Carotid TIAs occur in the territory of the internal carotid artery or its branches. Symptoms of carotid TIAs include transient dysarthria, limb weakness, face weakness, visual impairment, dysphasia, and body or face numbness or paresthesia.
Dec. 04, 2019
Jun. 01, 2020
Arachnoid cysts are classified as developmental cysts and are common incidental findings. They are usually intracranial and supratentorial in location, but spinal, and even intraneural, cysts may be identified and possibly cause symptoms. Asymptomatic cysts do not require active management. However, some are associated with seizures, local pressure effects, or hydrocephalus and may require treatment.
Mar. 21, 2019