Comparison of Modafinil and Methylphenidate in Treatment of Excessive Daytime Sleepiness in Patients With Parkinson's Disease

Study Overview
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Brief Summary
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This is an open-label cross-over randomized control study comparing the effect of modafinil and methylphenidate in patients with Parkinson's disease with excessive daytime sleepiness.

Detailed Description
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Sleep disorders are common in Parkinson's disease (PD) and a significant cause of impairment of function in already disabled individuals. Almost all patients with PD report disturbed sleep, including excessive daytime sleepiness (EDS), disorders of initiating and maintaining sleep (DIMS) or parasomnias.1 The underlying pathology associated with PD and medication effects have both been implicated in the sleep disorders affecting these patients. EDS has become the focus of attention because of its effect on quality of life and impairment in driving and predisposition to traffic accidents. Its prevalence has been estimated between 15-50%. Treatment of EDS has become an important factor in the management of the PD patient, and the recent introduction of modafinil, a wakefulness promoting agent approved for narcolepsy, has led to increasing off-label use of this agent. Prior to modafinil, amphetamine and methylphenidate, two classical psychostimulants, were the agents of choice in treating EDS. However, these agents also have a direct effect on the dopaminergic system. They increase both sleep and REM latency, while reducing total sleep time and REM sleep. By comparison, the mechanism of action of modafinil is unknown, yet distinct from that of the psychostimulants. A direct comparison of the effect on EDS of modafinil with classical psychostimulants is lacking. The overall goals of this research proposal are to determine which agent is most effective in treating EDS in PD patients by using an open-label randomized control study comparing efficacy, onset of action and tolerability.

Official Title
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Comparison of Modafinil and Methylphenidate in Treatment of Excessive Daytime Sleepiness in Patients With Parkinson's Disease

Conditions
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Parkinson's Disease

Intervention / Treatment
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* Drug: modafinil
* Drug: methylphenidate


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Veteran at study site Exclusion Criteria: Patients unable to give consent Diagnosis of EDS prior to diagnosis of PD Brain injury due to trauma, CVA, tumor or anoxia

Ages Eligible for Study
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Minimum Age: 50 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: modafinil|nan|
|Drug: methylphenidate|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Compare efficacy of the two agents in treating excessive daytime sleepiness at 4 and 8 weeks |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Compare the safety profile of modafinil and methylphenidate |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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excessive sleepiness, hypersomnolence, Parkinson's disease