HealthBoard's Health Guide from WebMD
We have partnered with WebMD to provide detailed health and disease information

diagKNOWsis.org
This website provides references to dozens of general diagnosis references

Medline Plus
Medline Plus is part of the National Library of Medicine from the NIH

National Institutes of Health
National Institutes of Health

Medhunt
Medhunt is presented by the Health on the Net Foundation

IntelliHealth.com
Published by Harvard Medical School

The Doctor's Doctor
If you're a little more savvy and understand terminology

WrongDiagnosis.com
If you're unsure the doctor has diagnosed you correctly

HealthGrades.com
Physician quality reports

MedTerms.com
Medical terminology

The Merck Manual
A large searchable site with information on understanding medical terms, disease information, drug descriptions, and others.