(HealthDay News) -- Here are the latest clinical trials, courtesy of CenterWatch:

Shingles

If you have pain, burning, and a tingling sensation on the skin followed by a bumpy, itchy, red rash with small fluid-filled blisters, you may have shingles. If you are at least 18 and have such a rash that started less than three days ago, you may qualify for this study.

The research site is in Mesa, Ariz.

More information

Please see http://www.centerwatch.com/patient/studies/cat225.html.

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Insomnia

If you are aged 18 to 64, have fewer than 6.5 hours of sleep per night and are awake for at least 60 minutes during the night, you may qualify for this study.

The research site is in Dallas, Texas.

More information

Please see http://www.centerwatch.com/patient/studies/cat189.html.

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Migraine and Cluster Headaches

If migraine headaches are disrupting your life, you may qualify for this study.

The research site is in Murray, Utah.

More information

Please see http://www.centerwatch.com/patient/studies/cat100.html.

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