Neuro Flashcards
Younger pt, asymmetric resting tremor, 4-5Hz
Early Parkinson –> trihexyphenidyl
Chorea, behavior disturbances, irritable, withdrawn disease and CT findings
Huntington = atrophy of caudate, large lateral ventricles
Broad-based gait, dysmetria, nystagmus, intention tremor, etOH abuse
cerebellar dysfunction/atrophy
Tremor when moving limb, goes away when relaxed
Essential tremor –> etOH, propanolol, primidone, gabapentin
Resting tremor, rigidity, bradykinesia, postural instability, asymmetric onset, inaudible speech
Parkinson
Tx Parkinson tremor
DA - levodopa
Tx Parkinson motor fluctuations, dyskinesia
Selegiline (MAOB), entacapone, tolcapone (COMT)
Tx Tourette syndrome
1 = Clonidine –> guanfacine, pimozide, haldol, fluphenazine, trifluroperazine
Co-morbidity w/ Huntington
Depression –> suicide
Tx helpful for Huntington chorea
Tetrabenazine delplete DA
Sx Tx for Huntington
Haldol
Twisting, repetitive, abnormal posture
Dystonia - metaclopramide, prochlorperazine
Unilateral, violent arm movements
Hemiballismus - CL subthalamic nucleus
Broad-shuffling gait, memory loss, urinary incontinence, ventricular enlargement
NPH - dec CSF abs
Tremor in legs immediately when standing, gone with sitting, 14-18hz
Orthostatic tremor
Multiple, B/L periventricular plaques, heat sensitivity, new hemiplegia, incontinence tx?
MS exacerbation = steroids
Tx in relapsing-remitting or secondary MS
Glatiramer or beta-interferon
Inc IgG index, paraplegia, incontinence, dec vibratory and proprioception, spastic reflexes
MS - oligoclonal bands
Tx that Dec frequency, slow progression of RR form of MS
IF-beta; steroids if acute
Tx of progressive MS
Cyclosporine, MTX, Mitoxantrone
R UE, L LE weakness, ataxia, central vision defect, eye pain worse w/ movement
MS –> MRI w/ cerebral & cerebellar plaques
Fluctuating MS, visual hallicunations, spontaneous parkinsonism but dopa not helpful
Lewy body dementia (eosinophilic intracytoplasmic inclusions of alpha synuclein)
Memory loss, language difficulties, cortical atrophy
Alzheimer dementia
Euphoria, dis-inhibition, apathy, compulsive, hyperorality, poor memory
Pick’s disease/Fronto-temporal dementia
Cognitive, motor, sensory dysfxn, step-wise worsening
Multi-infarct dementia
Dementia CT findings
Diffuse cortical, subcortical atrophy
Early Personality changes –> memory loss
Fronto-temporal dementia/atrophy
Pt complains of memory loss, sign of depression
Pseudodementia - assoc w/ depression
Risks and Tx for idiopathic intracranial HTN
Obese (female, tetracyclines, hyperVit A (isotretinoin) –> weight loss, acetazolamide
Young obese female w/ HA, normal MRI, papilledema
Benign IC HTN - causes: steroids, vit A, OCP –> blindness
HA - worse lying flat, pulsatile tinnitus, transient vision loss, papilledema, LP >250mmHg Dx?
Idiopathic Intracranial HTN
Trauma –> HA, old person, gradual LOC, crescent shape on CT
Subdural hematoma - bridging veins —> craniotomy
Side of head, lucid interval –> coma, CT LENS shaped
Epidural hematoma –> middle meningeal —> craniotomy
Blunt head trauma w/ hypotn –> HTN, brady, dec resp + IL hemiparesis, mydriasis, ptosis, coma
Epidural hematoma –> uncal herniation –>CN III, PCA, cerebral peduncle
“Thunder clap” HA = instant max intenstiy, worst HA ever, CT scan, ateriogram show bleed
Subarachnoid hemorrhage –> coil or clip w/in 48hrs OR after 6 weeks + CCBs, SBP <150
Instant severe HA, may return in 10days with same sx
SAH d/t aneurysm –> CT, spinal, ateriogram –> clipping or coil
Neuro deficit/stroke, HA, coma CT bleed in caudate, putamen
Intraparenchymal bleed –> dec SBP craniotomy & VP shunt ultimately
Acute HA worse when lying flat, vision changes, slit-like ventricles
Idiopathic Intracranial HTN
Holocranial HA, diplopia, pusatile tinnitus, young obese woman, empty sella, LR palsy
Idiopathic Intracranial HTN –> MRI –> LP + pressure
50, new HA, jaw claudication, scalp pain, polymyalgia rheumatica
Temporal arteritis –> High dose steroids –> Bx and ESR
Intense UL retroorbital pain, wakes up from sleep, ptosis, miosis
Cluster HA –> 100% O2
Prophylaxis for cluster HA
Verapamil, lithium, ergotamine
Progressive HA, worse in morning, blurred vision, vomiting –> bradycardia, HTN (Cushing reflex)
Brain tumor –> MRI + high dose steroids (decadron)
No growth in kids, sexual dyfxn in adult, bitemporal blindness, HA
Craniophrayngioma
1 CNS lesion in AIDS
Toxo = sulfadiazine + pyrimethamine, TMP-SMX for prophylaxis only
Multiple ring enhancing lesions on CT
Toxo
Multiple hypodense, non-enhanced lesions in cortical white matter, focal neuro deficits, HIV +
PML - speech, gait, vision
Single periventricular ring weakly enhancing lesion, + EBV DNA
Primary CNS Lymphoma —> + EBV DNA
Single ring-enhancing lesion in frontal lobe, neuro deficits, sinusitis, mastoiditis, lung abscess
Anaerobic bacteria (bacteroides)
Non-enhancing brain lesion
PML
Inappropriate behavior, optic nerve atrophy + papilledema on C/L side, anosmia
Frontal lobe tumor
Amenorrhea, galactorrhea, HA
Prolactinoma –> r/o pregnancy, hypothyroidism, prolactin level –> MRI –> bromocriptine
Solitary butterfly mass w/ central necrosis, vasogenic edema
Glioblastoma multiforme
Ataxia, truncal dystaxia, HA, nystagmus, papilledema
Medulloblastoma = VERMIS
Arm & leg dystaxia, IL falling/cerebellar signs
Astrocytoma = cerebellar hemisphere/parietal lobe
Paralysis of vertical gaze, retraction of eyelid, IC HTN, coarse face, axillary hair
Pinealoma