Understanding and treating freezing of gait in parkinsonism, proposed working definition, and setting the stage
Understanding and treating freezing of gait in parkinsonism, proposed working definition, and setting the stage
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DOI:
10.1002/mds.21927
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发表时间:
2008-01-01
影响因子:
8.6
通讯作者:
Nieuwboer, Alice
中科院分区:
文献类型:
--
作者:
Giladi, Nir;Nieuwboer, Alice
Although the term “freezing of gait”(FOG) was not used by early authors and notably not by Parkinson himself, 1 the typical propulsive high frequency stepping associated with this gait disturbance was described by him as a feature of Parkinson’s disease (PD). Martin2 also reported examples of an inability to initiate locomotion accompanied by disturbed stepping patterns in postencephalitic parkinsonism with a dramatic response to visual cues. It was not until the early 1970s that FOG started to get increased attention, based on the realization that its response to levodopa was more complex than that of bradykinesia and rigidity. During those early days, it was first suggested that levodopa can sometimes induce or even worsen FOG. 3 Based on those reports and the occurrence of FOG in atypical parkinsonism, it has long been considered a levodopa-resistant symptom. It took 30 years of experience with levodopa treatment to understand that this is a misconception. Schaafsma et al. demonstrated that “off”-related FOG episodes were significantly shorter in duration and markedly fewer in frequency when turning from “off” to “on.” 4 However, the concept of a complex relationship with levodopa treatment still holds, as is evidenced by the continued manifestation of FOG in the “on” period, and its relationship with other levodopa-resistant symptoms such as postural instability. 5, 6