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Questions are answered Monday–Friday, 9 a.m.–4 p.m. Eastern Time, except federal holidays. We do our best to respond within two business days.
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The information and email services on this Web site cannot provide personalized medical advice to individuals about their condition or treatment.
This site provides visitors with information to better understand their health and their diagnosed disorders.
The resources on this site should not be used as a substitute for professional medical care and we urge you to work with your medical care providers for answers to your personal health questions.
We also do not rate or provide referrals to physicians or health care facilities. Such activities are usually handled by state or local governments.
This page last reviewed on April 24, 2018