Search for information on a disease, symptom, physical sign, non-brand drug or common laboratory abnormality.

A medical database focused on family practice.

Extensive knowledge base of medical information on symptoms, diagnosis, and misdiagnosis of more than 20000 medical conditions.

A Cabinet department of the United States government with the goal of protecting the health of all Americans and providing essential human services.

Leading research to understand, treat, and prevent infectious, immunologic, and allergic diseases.

The most reliable and current women's health resource with information on more than 800 topics.

Read doctor-produced health and medical information written for you to make informed decisions about your health concerns.

Award-winning, trustworthy, and credible health information and tools for patients from American Academy of Family Physicians.

Your source for reliable health information from the Federal government.

Health information from the National Library of Medicine.