3rd May 2012 - New research
CAUSES OF SUDDEN WORSENING IN PARKINSON'S DISEASE
Neurologist [2012] 18 (3) : 120-124 (K.S..Zheng, B.J.Dorfman, P.J.Christos, 
N.R.Khadem, C.Henchcliffe, P. Piboolnurak, M.J.Nirenberg)
Complete abstract
Episodes of sudden and transient worsening of symptoms commonly occur in 
Parkinson's Disease, especially when the Parkinson's Disease is more severe. A 
quarter of people with Parkinson's Disease were found to be affected in this 
way. Infection was the single most frequent cause, accounting for a quarter of 
cases. Other common causes were anxiety, medication errors, poor adherence to 
taking the required drugs, medication side effects, and postoperative decline. 
Overall, over 80% of reasons were attributable to reversible or treatable 
causes.
Most� 
people who experienced a sudden worsening of symptoms recovered fully, but a 
third of people experienced recurrent episodes. One in six people suffered 
permanent decline. Those people most prone to sudden or transient worsening were 
those who had Parkinson's Disease for nearly eight years or more, had more 
severe symptoms, had greater use of dopaminergic drugs, and had a greater 
prevalence of motor complications. For a printable version of this article
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