Parkinson disease: Difference between revisions

From IDWiki
No edit summary
()
 
Line 31: Line 31:
 
== Management ==
 
== Management ==
   
=== Non-motor Symptoms ===
+
=== Non-Motor Symptoms ===
   
 
==== Psychosis ====
 
==== Psychosis ====
Line 40: Line 40:
 
* For refractory symptoms, consider [[quetiapine]], [[pimavanserin]], and [[clozapine]]
 
* For refractory symptoms, consider [[quetiapine]], [[pimavanserin]], and [[clozapine]]
 
** Other antipsychotics have higher risk of exacerbating Parkinson disease
 
** Other antipsychotics have higher risk of exacerbating Parkinson disease
  +
  +
==== Orthostatic Hypotension ====
  +
  +
* May be caused by the underlying disease or by medications (including levodopa and MAO B inhibitors) that are used to treat it
  +
* Non-medical management includes increased oral fluid (possibly with boluses), salt supplementation, physical counter-maneurvers, abdominal banding, stockings, and elevating the head of the bed
  +
* Pharmacologic treatments include [[droxidopa]], [[fludrocortisone]], and [[midodrine]]
   
 
[[Category:Neurology]]
 
[[Category:Neurology]]

Latest revision as of 14:25, 21 October 2021

Background

  • Degenerative neurological disorder characterized by progressive bradykinesia, rest tremor, rigidity, and postural instability

Pathophysiology

  • Destruction of substantia nigra

Clinical Manifestations

  • Rest tremor at 4-6 Hz, inhibited by movement and sleep, worsened by stress
    • Pill-rolling
  • Rigidity, with increased tone and cog-wheeling
    • No spasticity
    • Often worse with repeated flexion
  • Bradykinesia
    • Short, shuffling gait with festination
    • Loss of arm swing
    • Micrographia
  • Postural hypotension
  • Glabellar tap reflex, normally stops after 5-10 taps

JAMA Rational Clinical Exam

  • Change in speech (LR+ 2.6, LR- 0.73)
  • ...

Differential Diagnosis

Management

Non-Motor Symptoms

Psychosis

  • Usually worsened by antiparkinson medications
  • Evaluate and treat any triggers
  • Consider decreasing any anticholinergic drugs, followed by amantadine, dopamine agonists, monoamine oxidase type B inhibitors, and COMT inhibitors, and finally levodopa (as a last resort)
  • For refractory symptoms, consider quetiapine, pimavanserin, and clozapine
    • Other antipsychotics have higher risk of exacerbating Parkinson disease

Orthostatic Hypotension

  • May be caused by the underlying disease or by medications (including levodopa and MAO B inhibitors) that are used to treat it
  • Non-medical management includes increased oral fluid (possibly with boluses), salt supplementation, physical counter-maneurvers, abdominal banding, stockings, and elevating the head of the bed
  • Pharmacologic treatments include droxidopa, fludrocortisone, and midodrine