Learn more about what ails you. Here are some common symptoms.
Common Symptoms:
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The Special Topics Medical Dictionary P-R provides comprehensive, reliable definitions for specific medical topics. Whether you are interested in pain medications or radiation therapy, learn what medical terms mean, see images and get related information on various aspects of health and wellness.
Featured Article: Reflux Board
A reflux board is a device prescribed for use in children who have gastroesophageal reflux. Learn how reflux boards work and see alternative treatment options. See more »
Radiation Therapy
Radiation therapy is a treatment approach that uses radiation to destroy cancer cells and prevent them from further growth. Learn more about the radiation therapy process, potential side effects, and alternative treatment options.
See more »Rape
Rape is defined as sexual intercourse forced on a person without his or her permission. Learn more about rape prevention, symptoms, victim assistance, and treatment options.
See more »Recognizing Medical Emergencies
Recognizing medical emergencies includes understanding or recognizing warning signs, knowing what to do, and who to contact. Learn how to recognize medical emergencies and what to do in case of an emergency.
See more »Reflux Board
A reflux board is a device prescribed for use in children who have gastroesophageal reflux. Learn how reflux boards work and see alternative treatment options.
See more »Remembering Tips
Remembering tips, also called memory aids, help patients with memory loss or Alzheimer’s disease improve their memory. See a complete listing of “remembering tips” and memory loss resources.
See more »Reportable Diseases
Reportable diseases are diseases considered to be of great public health importance and must be reported when diagnosed by doctors or labs. Learn about reportable disease groupings, lists by states, and contact information.
See more »Resources
Resources for information and organizations pertaining to specific diseases and conditions are listed below. See all disease and conditions resources and organizations.
See more »Retina
The retina is the light-sensitive layer of tissue at the back of the inner eye which converts images to electric signals and sends them to the brain. Learn more about the retina’s anatomy and various functions.
See more »Reye Syndrome - Resources
Reye’s Syndrome resources and information are provided by the National Reye’s Syndrome Foundation Inc. Find contact information and website address for Reye’s Syndrome resources.
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Diseases A-Z
A comprehensive guide with three thousand articles, including images and multimedia.
Common Conditions:
