Animal bites and scratches, even when they are minor, can become infected and spread bacteria to other parts of the body.
Raynaud's phenomenon or, simply, Raynaud's, is a disorder characterized by decreased blood flow - usually to the fingers, and less frequently to the ears, toes, nipples, knees, or nose.
Reactive Arthritis (Reiter's Syndrome)
Reactive arthritis, also known as Reiter's syndrome, is a type of arthritis that occurs as a reaction to an infection somewhere in the body.
Gastroesophageal reflux disease (GERD) is a digestive disorder that is caused by gastric acid flowing from the stomach into the esophagus.
Repetitive Motion Injury
Repetitive motion injuries, also called repetitive stress injuries, are temporary or permanent injuries to muscles, nerves, ligaments, and tendons caused by performing the same motion over and over again.
Restless Legs Syndrome (RLS)
Restless legs syndrome (RLS) is a sleep disorder in which a person experiences unpleasant sensations in the legs.
Rheumatic Heart Disease
Rheumatic heart disease is a condition in which permanent damage to heart valves is caused by rheumatic fever.
Rhinitis is a reaction that occurs in the eyes, nose and throat when airborne irritants (allergens) trigger the release of histamine.
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is an infection caused by the bite of an infected tick.
Rosacea is a common skin condition that usually only affects the face and eyes. Characterized by redness, pimples, and broken blood vessels, rosacea tends to begin after middle age (between the ages of 30 and 60) and is more common in fair-skinned people.
Rotator Cuff Injury
An injury to the rotator cuff, such as a tear, may happen suddenly when falling on an outstretched hand or develop over time due to repetitive activities.
Rubella (German Measles)
Rubella, sometimes called German measles, is an acute viral infection that causes a mild illness in children and slightly more severe illness in adults.