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Condition Info
ConditionName
Parkinson disease
ConditionDescription
Symptoms
Tremor (trembling) in hands, arms, legs, jaw, or head; Cogwheel rigidity (slowing of movement on passive flexion or extension of extremity); Limited facial expression; Slowness; Difficulty walking; Can progress to cognitive and behavioral; Gait disturbance; Problem with initiating gate, problem with stopping; Lightheadedness when getting up from seating position; Depression
PhysicalFindings
Writing is small – micrographic. Postural instability or orthostatic hypotension. Inability of pulse and BP to reset. Pill-rolling tremor. Resting tremor. Shuffling gait (difficulty initiating and stopping ambulation, small steps, no swinging of the arms); Masked facies, rare blinking, cogwheel rigidity.
ClinicalTests
Clinical diagnosis. No test.
RiskFactors
Head trauma Boxing Antipsychotic medication Encephalitis Metoclopramide (MPTP) exposure Most common: idiopathic Elderly (50+ y/O)
IsRedFlag
IsNPLEX
Consequence
Death of dopamine-generating cells; High level of Ach;
ProgressionFromCondition
Loss of substantia nigra -> decrease in dopamine, movement disorder
TreatmentOptions
Deep brain stimulation; Electrical stimulation;
PharmOptions
Amantadine – for older people >60 intolerant of anticholinergic; Severe: inability to care for themselves, orthostatic Dopamine agonists (infrequent use b/c AE): Pramipexole; Bromocriptine; Most effective with highest level of toxicity: Levodopa/carbidopa; Insufficient dopamine – bradykinesia; Too much dopamine - dyskinesia; AVOID tyramine-containing foods (eg, cheese) with MAO;
WebLink
https://www.merckmanuals.com/professional/neurologic-disorders/movement-and-cerebellar-disorders/parkinson-disease
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