ABSTRACT
The frequency of vertebral artery aneurysm is rare and a common presenting sign is subarachnoid hemorrhage. Lateral medullary syndrome is characterized by loss of pain and temperature sensation on the contra lateral lesion side of the body and ipsilateral lesion side of the face, dysphagia, dysarthria, ataxia, vertigo, nystagmus, and Horner syndrome. Vertebral artery dissecting aneurysm is a common cause of lateral medullary infarction. We present a rare case of a 46-year old male patient that developed ischemic attack presenting as transient lateral medullary syndrome due to thrombosed-fusiform aneurysm of vertebral artery. He was treated with aspirin and heparin, and then discharged with complete resolution of symptoms.
Subject(s)
Humans , Male , Aneurysm , Aortic Dissection , Aspirin , Ataxia , Deglutition Disorders , Dysarthria , Heparin , Horner Syndrome , Infarction , Lateral Medullary Syndrome , Sensation , Subarachnoid Hemorrhage , Thrombosis , Vertebral Artery , VertigoABSTRACT
Metronidazole is a nitroimidazole antibiotic used for anaerobic infections, protozoan infections, and Helicobacter pylori infections. It may produce rare but well known neurological adverse effects including peripheral neuropathy, encephalopathy, cerebellar dysfunction, and seizures. We describe three patients with metronidazole-induced reversible cerebellar dysfunctions characterized by abnormal oculomotor findings, dysmetria, and ataxia. The diagnosis of metronidazole toxicity was made clinically and supported by the brain MRI findings. The neurological signs and abnormal signal intensity on MRI resolved after discontinuation of metronidazole.
Subject(s)
Humans , Ataxia , Brain , Cerebellar Ataxia , Cerebellar Diseases , Helicobacter pylori , Metronidazole , Peripheral Nervous System Diseases , Protozoan Infections , SeizuresABSTRACT
Dapsone is an agent commonly used to treat leprosy and its most common adverse effect is a hemolytic anemia. We present a patient who showed transient downbeat, bilateral horizontal gaze-evoked nystagmus (GEN), and perverted head-shaking nystagmus after taking a large dose of dapsone. These oculomotor abnormalities are assumed to be a reversible vestibulocerebellar dysfunction caused by over-dose of dapsone.