Condition Library
Conditions starting with R
29 health topics beginning with the letter R.
- RabiesRabies is a deadly animal disease caused by a virus. People get it from the bite of an infected animal. Learn about treatments.
- Radiation EmergenciesA radiation emergency involves exposure to a large amount of radiation. Learn about ways to cope with possible situations and make a disaster plan.
- Radiation ExposureRadiation exposure to even small amounts over a long time, raises your risk of cancer. A lot over a short time, causes burns or radiation sickness.
- Radiation TherapyRadiation therapy is treatment used to stop the spread of cancer. It must be carefully done to minimize side effects and maximize benefits.
- RadonRadon comes from the natural breakdown of uranium in soil, rock, and water. It is the second leading cause of lung cancer. Test your home for radon levels.
- Rare DiseasesA rare disease is one that affects fewer than 200,000 people in the United States. There are nearly 7,000, affecting more than 25 million Americans.
- RashesA rash, or dermatitis, is an area of irritated or swollen skin. It can be itchy, red, and painful. Learn about the types, causes, and treatments.
- Raynaud PhenomenonRaynaud phenomenon is a disorder of the blood vessels. It causes your fingers and toes to become cold and numb when you get cold or stressed. Learn more.
- Rectal DisordersThe rectum is the lower part of your large intestine. Common problems include hemorrhoids, abscesses, incontinence and cancer.
- Reflux in ChildrenKids can get reflux and GERD, which happen when stomach contents leak back up. Learn the difference between the two, and the symptoms and treatments.
- Reflux in InfantsMany babies spit up, or have reflux, and some have the more serious GERD. Learn the difference between the two, and their symptoms and treatments.
- Refractive ErrorsAre you nearsighted, farsighted, or have astigmatism? That's a refractive error, caused by an irregular-shaped cornea or lens. Learn how it's treated.
- RehabilitationRehabilitation is the process that assists a person in recovering from a serious injury, illness or surgery to regain strength, or relearn skills.
- Reproductive HazardsReproductive hazards can affect your reproductive health, fertility, and ability to have healthy children. Learn about the types and prevention.
- Respiratory FailureRespiratory failure happens when not enough oxygen passes from your lungs to your blood. Lung diseases can cause respiratory failure. Read more.
- Respiratory Syncytial Virus InfectionsRespiratory syncytial virus (RSV) causes cold-like symptoms in adults and healthy children but can cause serious problems in babies. Read more.
- Restless LegsThat creeping, crawling, tingling, or burning feeling in your legs when lying down or sitting may be restless leg syndrome (RLS). Learn what can help.
- Retinal DetachmentThe retina is in the back of your eye. It senses light and sends images to your brain. A detachment (pulling away) is an emergency. Know the symptoms.
- Retinal DisordersThe retina is a layer of tissue in the back of your eye. It senses light and sends images to your brain. Learn about retinal disorders and treatments.
- Rett SyndromeRett syndrome is a rare genetic disease. It causes developmental and nervous system problems, mostly in girls. Learn about symptoms and treatments.
- Reye SyndromeLearn about Reye syndrome, which affects the liver, brain, and other organs. It is rare, and is often in children who have just had a viral infection.
- Rh IncompatibilityRh incompatibility happens during pregnancy if mom's blood is Rh-negative and the baby's is Rh-positive. Learn about screening and treatment.
- Rheumatoid ArthritisRheumatoid arthritis (RA) is a form of arthritis that causes pain, swelling, and stiffness in your joints. Your risk increases as you become an older adult.
- RicketsRickets causes soft, weak bones in children. It usually occurs when they do not get enough vitamin D. Read about symptoms and treatment.
- RosaceaRosacea can range from redness in the face to acne and thickened skin and inflammation that may extend into the eyes. Learn what treatments can help.
- Rotator Cuff InjuriesThe rotator cuff is made up of muscles and tendons in your shoulder area. Tendinitis, bursitis, and tears are common problems with the rotator cuff.
- Rotavirus InfectionsRotavirus is a virus that causes symptoms of severe diarrhea, vomiting, fever, and dehydration. It is easily spread; but vaccines are available.
- RubellaRubella (German measles) is a viral infection. It's usually mild, but can be dangerous for an unborn baby if the mother gets it. Read about prevention
- Rural Health ConcernsPeople in rural, remote areas can face different health issues than people living in towns and cities, such as even being able to get health care.
Source: MedlinePlus.gov, U.S. National Library of Medicine.