Hemi Chorea Associated With Hyperglycemia Benefitted From Barbiturate Therapy and Strict Glycemic Control
Samer N Roy*, Haroon Chaudhry, Shreya Sahay Saxena and Krishnakant Shah Aka Khandelwal
Internal Medicine, USA
Submission: June 12, 2017; Published: June 27, 2017
*Corresponding author: Samer N Roy, Internal Medicine102, Thomas Rd Suite 504, West Monroe, Los Angeles 71291, California, USA Tel: 518-512-1821; Email: hchaudhrymd@gmail.com
How to cite this article: Samer N R, Haroon C, Shreya S S, Krishnakant S A K. Hemi Chorea Associated With Hyperglycemia Benefitted From Barbiturate Therapy and Strict Glycemic Control. Anatomy Physiol Biochem Int J. 2017; 2(5): 555599.DOI10.19080/APBIJ.2017.02.555599
Abstract
Individuals with chronic and severe hyperglycemia can present with no symptoms to few non specific symptoms such as nausea, vomiting or abdominal pain [1]. Sometimes patients present with advanced nephropathy or neuropathy [2]. Here we present a case where an individual with long standing uncontrolled diabetes presented with an unusual presentation. He presented with uncontrolled and brisk jerking movement of his left hand. Immediately after starting the neurosuppresents and proper glycemic control patient reported decrease in intensity of these symptoms. Primidone decreases the nerve impulses in the nervous system and is a typical anti convulsing. Here we describe a case of hyperglycemia with an unusual clinical presentation that benefitted from a barbiturate.
Abbreviations: C-H-BG: Chorea-Hyperglycemia Basal Ganglia
Introduction
Chorea is a rapid, jerky, and irregular, movement that tends to occur in the distal limbs, or face, but may also occur in the proximal limb and axial structures. Chorea can occur in association with vascular disease, hypo- or hyper glycemia [3] and a variety of infections and degenerative disorders. Harrison 19th Hemichorea has been reported in patients with chronic uncontrolled diabetes. We report a similar patient who benefitted from controlling blood sugar levels and Primidone. Primidone belongs to a class of barbiturates and is classically used for focal seizures [4]. It is evident from our clinical experience that administration of Primidone in addition to proper sugar control patient was asymptomatic.
Case Presentation
A 54 year old Caucasian male complained of having 10 days of irregular, random, and non-rhythmic violent flinging movements in his left hand. Movements were jerky choreiform in nature, and had started 10 days ago when he was driving, slowly getting worse each day. The jerking movements were more intense and violent towards the end of the day when he would return from work, and would worsen when he was nervous. The patient's wife said that it stops when he is sleeping, but also reported he was unable to perform his day to day activities, such as tying his shoe laces or buttoning his shirt. The patient denied any memory problems, gait abnormalities, vision disturbances, sensory deficit, or confusion. However, the patient’s past medical history is significant for hypertension, diabetes mellitus, anxiety disorder, tobacco use disorder, and myocardial infarction status post-CABG.
The family history is negative for any neurological disorder. Physical examination was unremarkable, except constant choreiform and dystonic movements involving his left hand. Cranial nerves were grossly intact, and his blood pressure was 131/68, heart rate was 86/min, respiratory rate was 18/min, and temperature 98.3F. Random blood sugar level at the clinic was 454. His home medications included Losartan 25mg; ones a day spell out Metformin 750mg twice a day out and Aspirin 325mg once a day. We ordered blood tests and imaging studies, and consulted neurology. We advised the patient to call for medical aid if he has fever, neck stiffness, headache, blurry vision, or gait difficulties.
At this time, differential diagnosis included hemorrhagic or ischemic stroke in the striatum, Huntington chorea, neoplasm, lupus, Wilson's disease, and C-H-BG (Chorea-Hyperglycemia basal ganglia). Laboratory studies revealed hyponatremia with sodium of 130mEq/l, hyperglycemia with glucose levels 434mg/ dl and dyslipidemia with cholesterol 355mg/dl, triglyceride 588mg/dl, VLDL 118mg/dl, Cholesterol/HDL ratio of 8.7, and HbAlC was 13.7. Moderate microalbuminuria was evident, and urgent MRI brain showed asymmetrical increased T1 signals within the right basal ganglia- primarily involving the caudate head and putamen (Figure 1). There was corresponding hypointensity on T2 imaging showing clustered tiny cyst-like spaces in the right frontal parasagittal periventricular white matter reflecting small remote infarct.
Findings were consistent with hyperglycemic hemichorea hemiballismus. Patient came to the clinic after the tests were done and was advised to take Primidone 50mg ones a day, Insulin and Clonazepam 1mg every night. Patient was put on Clonazepam for him to cop up with the anxiety he was experiencing because of his new symptoms. C-peptide level was 3.95, so Carotid Doppler was ordered and it showed patent bilateral carotid arteries. Echocardiogram showed mild aortic valve sclerosis and LVEF of 50-55%. We called the neurology department and ordered the consult, and their view was that the patient might have C-H-BG (Chorea-hyperglycemia basal ganglion) syndrome [5]. Patient has gradually improved with strict diabetes control, and it has nearly been a month since he reports improved chorea.
Discussion
The approach to patients with neurologic symptoms begins with focusing the clinical problem first in its anatomic and then in its path-physiological form. MRI of the brain was done to locate the site of the lesion. Chorea results specifically from disorders of the basal ganglion and so was it in our case. The basic path- physiology of this disorder is reduced modulation of the basal ganglion by the sub thalamic nucleus. In majority of cases the excitatory output of the sub-thalamic nucleus is reduced, leading to a reduced inhibitory outflow of the basal ganglion. Without normal restraining the neurons are readily activated by inappropriate signal causing unrestricted abnormal movements. It has been associated with many conditions like encephalitis, hyperthyroidism, anticholinergic toxicity and other genetic and metabolic disorders. Long standing hyperglycemia is considered to be the etiology of this neurological clinical manifestation.Treatment for this patient was challenging as well as crucial. Doctor's instant instinct was to control blood sugar levels. As we all know, diabetes has been the cause of many reversible and irreversible changes, angiopathy and neuropathy to name a few. These conditions are a result of metabolic imbalance of advanced glycated end products [6] (glycated proteins and lipid when exposed to high levels of glucose and other sugars) deposited in nerves and due to the involvement of small blood vessel [7]. Compromised blood supply to this area can be a potential cause. Literatures have said that various metabolic disorders such as Hyperglycemia can cause chorea as well as seizure disorder [8].
The point of discussion will be how an antiepileptic drug played a role in absolute remission of the symptoms. Primidone is a Barbiturate, with anticonvulsant properties. It works via interactions with voltage gated sodium channels which inhibit high frequency repetitive firing of action potential. It is primarily used for focal epileptic seizures. It is a structural analogue of phenobarbital. It is approved for adjunctive or monotherapy for simple and complex partial seizures [9,10] essential tremors [11] and some behavioral disorders [12]. In our patient we were able to achieve desired effect with the use of this drug. It should be advisable to use this drug as an adjunctive therapy in patients with hyperglycemia related hemichorea.
Conclusion
We presented a case of chorea as a presenting symptom in patients with hyperglycemia. Correction of aberrant glucose levels lead to amelioration of the patient's chorea suggesting that tight sugar control is effective in preventing these symptoms. In addition to this barbiturates such as Primidone prove effective in choreas induced by metabolic disturbance in blood.
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