(HealthDay News) -- Here are the latest clinical trials, courtesy of Thomson CenterWatch:
Insomnia
If you have trouble falling asleep or staying asleep, you may qualify for this study of an investigational medication for sleep maintenance insomnia.
The research site is in Sherman Oaks, Calif.
More information
Please see http://www.centerwatch.com/patient/studies/cat189.html 
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Weight Loss
If your teen is extremely overweight and qualifies for weight-loss surgery, he or she may be eligible to participate in this study.
The research site is in Cincinnati, Ohio.
More information
Please see http://www.centerwatch.com/patient/studies/cat706.html .
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Migraine and Cluster Headaches
If you are ages 18 to 65 and have had migraines for at least a year, you may be eligible for this study.
The research site is in Media, Penn.
More information
Please see http://www.centerwatch.com/patient/studies/cat100.html .
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