Publications by authors named "Pattamon Panyakaew"

The ChulaPD ADL questionnaire is a meticulously developed tool by experts in Parkinson's disease (PD) and movement disorders, designed to assess functional limitations in daily activities. It comprehensively evaluates 15 key aspects of daily life through 115 items, including 15 for grading limitations and 100 for ADL limitations. Validated in a pilot study with 30 PD participants, the questionnaire demonstrated strong reliability.

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Article Synopsis
  • A detailed physical exam might not fully reveal the complexities of tremors; neurophysiology can help clarify these conditions.
  • The study involved a panel of experts who investigated how neurophysiological techniques can enhance understanding of various movement disorders, especially different types of tremors.
  • The findings emphasize the importance of neurophysiological assessments in accurately identifying and distinguishing between diverse tremor syndromes and other similar movement disorders.
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Article Synopsis
  • - The study focused on how parieto-motor paired stimulation affects brain plasticity in patients with writer's cramp (WC) and cervical dystonia (CD) compared to healthy volunteers.
  • - Using paired transcranial magnetic stimulation, researchers found that the stimulation increased motor cortex excitability in WC patients but not in CD patients or healthy individuals.
  • - The results indicate that while the stimulation enhances brain function in WC, it doesn't seem to relate to changes in the connectivity between the posterior parietal cortex and the motor cortex.
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The rising prevalence of Parkinson's disease (PD) globally presents a significant public health challenge for national healthcare systems, particularly in low-to-middle income countries, such as Thailand, which may have insufficient resources to meet these escalating healthcare needs. There are also many undiagnosed cases of early-stage PD, a period when therapeutic interventions would have the most value and least cost. The traditional "passive" approach, whereby clinicians wait for patients with symptomatic PD to seek treatment, is inadequate.

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Introduction: Freezing of gait (FOG) involves dysfunction of the motor and sensory systems. Peripheral sensory stimuli, including Thai acupressure, can improve proprioceptive function and decrease FOG episodes. Here, we sought to determine the efficacy of acupressure as a self-treatment to alleviate FOG in patients with Parkinson's disease (PD).

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The diagnostic approach for patients with tremor is challenging due to the complex and overlapping phenotypes among tremor syndromes. The first step in the evaluation of tremor is to identify the tremulous movement and exclude the tremor mimics. The second step is to classify the tremor syndrome based on the characteristics of tremor from historical clues and focused examination (Axis 1).

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Introduction: Combined plantar pressure and vibratory stimulation has been shown to decrease freezing of gait (FOG) episodes and improve spatiotemporal gait parameters compared to single stimulation in Parkinson's disease (PD) patients with FOG. However, the effect of combined plantar stimulations on plantar pressure analysis has never been explored.

Methods: Forty PD patients with frequent FOG were allocated to either FOG shoes embedded with a 100 Hz vibratory stimulation at the Achilles tendons and a soft thickened silicone pad at the hallux and sole, or sham shoes with a non-working vibratory motor and a flat non-pressure silicone pad (20 patients per arm) while seated for 96 s.

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Background: Impaired dexterity is an early motor symptom in Parkinson's disease (PD) that significantly impacts the daily activity of patients; however, what constitutes complex dexterous movements remains controversial.

Objective: To explore the characteristics of finger dexterity in mild-to-moderate stage PD.

Methods: We quantitatively assessed finger dexterity in 48 mild-to-moderate stage PD patients and 49 age-matched controls using a simple alternating two-finger typing test for 15 seconds.

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Sensory trick is a characteristic feature of cervical dystonia (CD), where a light touch on the area adjacent to the dystonia temporarily improves symptoms. Clinical benefit from sensory tricks can be observed before tactile contact is made or even by imagination. The supplementary motor area (SMA) may dynamically interact with the sensorimotor network and other brain regions during sensory tricks in patients with CD.

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Despite recent advances in tremor and dystonia classification, it remains difficult to discriminate essential tremor from dystonic tremor as they are similar in appearance and no biomarker exists. Further, tremor can appear in the same or a different body part than the dystonia. The aim of the current study was to better understand the differential pathophysiology of these tremors.

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Introduction: Freezing of gait (FOG) is a devastating symptom that develops in patients with advanced Parkinson's disease (PD) and is often unresponsive to pharmacological treatment. Recent research suggests that FOG may result from dysfunctional plantar peripheral sensory systems. The impact of combined plantar pressure and vibratory stimulation over vibratory or pressure alone on FOG remains unexplored.

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Objective: This study aims to validate the Thai translation of the Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS).

Methods: The English version was translated into Thai and then back-translated into English. The translated version underwent 2 rounds of cognitive pretesting to assess the ease of comprehension, ease of use and comfort with the scale.

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Dystonia and tremor frequently co-occur. In some cases, they have shared biological mechanisms, while in others dystonia and tremor are two comorbid conditions. The term "dystonic tremor" is used to describe tremor in those who have dystonia.

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The various forms of tremor are now classified in two axes: clinical characteristics (axis 1) and etiology (axis 2). Electrophysiology is an extension of the clinical exam. Electrophysiologic tests are diagnostic of physiologic tremor, primary orthostatic tremor, and functional tremor, but they are valuable in the clinical characterization of all forms of tremor.

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Background: The concerns of people with Parkinson's disease (PD) about their disease are often different from the objective clinical picture and subject to various influencing factors, including disease progression. Currently our understanding of these concerns is limited, particularly in Asian countries.

Methods: A 50-item survey on Parkinson's Disease Patients' Concerns (PDPC Survey) was developed by a multidisciplinary care team.

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Background: Although risk factors that lead to falling in Parkinson's disease (PD) have been previously studied, the established predictors are mostly non-modifiable. A novel method for fall risk assessment may provide more insight into preventable high-risk activities to reduce future falls.

Objectives: To explore the prediction of falling in PD patients using a machine learning-based approach.

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There are two types of dystonic tremor syndromes (DTS), dystonic tremor (DT) and tremor associated with dystonia (TAWD), and neither is understood. DTS likely share some mechanisms with nontremulous dystonia, and there may also be overlaps with essential tremor (ET). We studied 21 ET (8 females, 13 males) and 22 DTS human patients (10 females, 12 males), including 13 human patients with DT (writer's cramp with writing tremor) and 9 human patients with tremor associated with dystonia (TAWD; cervical dystonia with hand tremor).

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Purpose: People with Parkinson's (PwP) often feel stigmatized, especially when their symptoms are visually prominent. In some countries, public awareness of Parkinson's disease can be minimal, leading to social challenges for PwP.

Patients And Methods: A public educational campaign using videos (VDO) showing 5 PwP in different social situations that their symptoms could be a source of inconvenience to others were launched on Facebook (FB) and television (TV).

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Background: Orofacial dystonia (OFD) is considered a supporting feature for a diagnosis of Multiple System Atrophy (MSA). However, the association of OFD with other adjacent symptoms has not been explored.

Objectives: To identify clinical characteristics of OFD and associated bulbar symptoms in MSA patients.

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Introduction: The increasing global burden of Parkinson's disease (PD) poses a particular challenge for developing countries, such as Thailand, when delivering care to a geographically diverse populace with limited resources, often compounded by a lack of expertise in the use of certain PD medications, such as device-aided therapies (DAT).

Areas Covered: A panel of local, regional, and international PD experts convened to review the unmet needs of PD in Thailand and share insights into effective delivery of DAT, focusing on experience with apomorphine infusion. Despite its proven efficacy and safety, implementation of apomorphine infusion as a new option was not straightforward.

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