Adolfo Ramírez-Zamora

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Deep brain stimulation (DBS) has emerged as a successful therapy for the treatment of several neurological disorders with potential implications in management of psychiatric disease. A variety of well-characterized hardware and surgical complications have been reported after the procedure, including postoperative hardware infection, system failure, and(More)
Following deep brain stimulation (DBS) surgery, a variety of potential mechanical or functional complications ranging from perioperative events to hardware malfunction may occur. We present 2 patients who developed a unique complication of cyst formation at the tip of the DBS electrode in the absence of infection. One patient had a unilateral ventral(More)
Subthalamic nucleus (STN) deep brain stimulation (DBS) is the most common surgical treatment for managing motor complications in Parkinson’s disease (PD). Ultimately, outcomes depend on a variety of factors including lead location, access and expertize in programming and PD medical management. Nevertheless, achieving ideal programming settings can be(More)
Central nervous system (CNS) cavernous malformations (CMs) are developmental malformations of the vascular bed with a highly variable clinical course due to their dynamic nature. We present one case of 'de novo' brainstem cavernous malformation after radiation therapy adding to the increasing number of reported cases in the medical literature, and the case(More)
Deep brain stimulation (DBS) employing high-frequency stimulation (HFS) is commonly used in the globus pallidus interna (GPi) and the subthalamic nucleus (STN) for treating motor symptoms of patients with Parkinson's disease (PD). Although DBS improves motor function in most PD patients, disease progression and stimulation-induced nonmotor complications(More)
INTRODUCTION Chronic pain is one of the most common non-motor symptoms of Parkinson's disease (PD) affecting up to 85% of patients. Previous studies have established that reduced mechanical and thermal thresholds occur in both idiopathic PD patients and animal models of PD, suggesting that changes may occur in sensory processing circuits. Improvements in(More)
BACKGROUND Neurocysticercosis is a parasitic infection of the central nervous system caused by the larval stage of the tapeworm Taenia solium and is the most common parasitic infection involving the human nervous system. Neurocysticercosis represents one of the most common causes of symptomatic epilepsy in developing countries and is an increasing concern(More)
OBJECT Holmes tremor (HT) is characterized by irregular, low-frequency (< 4.5 Hz) tremor occurring at rest, with posture, and with certain actions, often affecting proximal muscles. Previous reports have tended to highlight the use of thalamic deep brain stimulation (DBS) in cases of medication-refractory HT. In this study, the authors report the clinical(More)
AIM We describe a child with severe generalized choreoathetosis and anti-N-methyl-d-aspartate receptor encephalitis after herpes simplex virus type 1 encephalitis. Recent evidence supports an autoimmune trigger for anti-N-methyl-d-aspartate receptor encephalitis following a viral infection. This is emerging as a common and potentially treatable autoimmune(More)
There is growing recognition that anxiety disorders have a greater impact on quality of life in Parkinson's disease than motor symptoms. Yet, little is known about the pathophysiology underlying this non-motor symptom in Parkinson's disease which poses a considerable barrier in developing effective treatment strategies. Here, we administered diazepam to(More)