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- Rabies vaccineVaccines to prevent rabies in humans and animals
- Raccoon eyesRaccoon eyes, also known as panda eyes or periorbital ecchymosis, is a sign of basal skull
- Race and healthHealth based on racial identity
- Radial artery of index fingerThe radialis indicis artery (radial artery of index finger) is a branch of the radial arte
- Radial grooveThe radial groove (also known as the musculospiral groove, radial sulcus, or spiral groove
- Radial tuberosityBeneath the neck of the radius, on the medial side, is an eminence, the radial tuberosity;
- Radiation exposureMeasure of ionization of air by ionizing radiation
- Radiocontrast agentSubstance which enhances visibility in X-ray-based imaging
- RadionicsForm of alternative medicine
- Rail suicideDeliberate death by means of a railway vehicle
- Random glucose testA random glucose test, also known as a random blood glucose test (RBG test) or a casual bl
- RanitidineMedication that decreases stomach acid
- Rapid prompting methodPseudoscientific communication technique
- Rapid strep testThe rapid strep test (RST) is a rapid antigen detection test (RADT) that is widely used in
- Rare diseaseDisease affecting a small percentage of the population
- RashChange of the skin that affects its color, appearance, or texture
- Raynaud syndromeMedical condition
- RBCG30rBCG30 (recombinant Bacillus Calmette-Guérin 30) is a prospective Bacillus Calmette-Guérin
- Reactive hypoglycemiaMedical condition
- ReactogenicityIn clinical trials, reactogenicity is the capacity of a vaccine to produce common, "expect
- Receptor antagonistType of receptor ligand or drug that blocks a biological response
- Rectal administrationDelivery of medication via the rectum
- Rectal bleedingRectal bleeding refers to bleeding in the rectum, thus a form of lower gastrointestinal bl
- Rectal painRectal pain is the symptom of pain in the area of the rectum. A number of different causes
- Rectovaginal fistulaMedical condition
- Rectus abdominis musclePaired straight muscle
- Red blood cell indicesRed blood cell indices are blood tests that provide information about the hemoglobin conte
- Red eye (medicine)A red eye is an eye that appears red due to illness or injury. It is usually injection and
- Reduced affect displayCondition of reduced emotional reactivity in an individual
- Reduction (orthopedic procedure)Fracture and dislocation fixing
- Reference Daily IntakeUS/Canada food nutrient labelling system
- Reflex syncopeBrief loss of consciousness due to a neurologically induced drop in blood pressure
- ReflexologyAlternative medical practice involving pressure to parts of the body
- Refractive surgerySurgery to treat common vision disorders
- Refugee health care in CanadaRefugee health care is the provision of health services to refugees and refugee claimants.
- Regular insulinRegular insulin, also known as neutral insulin and soluble insulin, is a type of short-act
- Regulation of alternative medicineBecause of the uncertain nature of various alternative therapies and the wide variety of c
- Regulation of therapeutic goodsLegal management of drugs and restricted substances
- Regurgitation (circulation)Type of blood flow
- ReikiPseudoscientific healing technique
- ReimbursementAct of compensating individuals for an out-of-pocket expense
- RelapseReturn of a sign, symptom, or disease after a remission
- Religious views on euthanasiaThere are many religious views on euthanasia, although many moral theologians are critical
- Renal biopsyRemoval of kidney tissue for medical examination
- Renal cell carcinomaForm of kidney cancer
- Renal replacement therapyBlood treatment used in kidney failure
- Renal tubular acidosisMetabolic acid-base disorder
- Renal ultrasonographyRenal ultrasonography (Renal US) is the examination of one or both kidneys using medical u
- Reperfusion therapyRestoring blood flow post-heart attack
- Repetitive strain injuryMuscular, skeletal, or nerve injury due to repetitive actions
- Reproductive coercionCollection of behaviors that interfere with decision-making related to reproductive health
- Reproductive medicineBranch of medicine
- Reproductive system diseaseDisease of the human reproductive system
- Residential treatment centerInpatient behavioral health facility
- Respiratory arrestMedical condition
- Respiratory centerBrain region controlling respiration
- Respiratory diseaseDisease of the respiratory system
- Respiratory examinationA respiratory examination, or lung examination, is performed as part of a physical examina
- Respiratory rateNumber of breaths per unit time
- Respiratory soundsMedical condition
- Respiratory therapistPractitioner in cardio-pulmonary medicine
- Respiratory tractStructure of the respiratory system
- Respiratory tract infectionInfectious disease affecting nose, throat and lungs
- Responses to the COVID-19 pandemic in April 2020Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in April 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in April 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in August 2020Aspect of the coronavirus outbreak
- Responses to the COVID-19 pandemic in August 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in December 2020Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in December 2021Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in February 2020Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in February 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in February 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in January 2020Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in January 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in January 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in July 2020Aspect of the coronavirus outbreak
- Responses to the COVID-19 pandemic in July 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in June 2020Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in June 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in June 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in March 2020Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in March 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in March 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in May 2020Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in May 2021Major events in a virus pandemic
- Responses to the COVID-19 pandemic in May 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in November 2020Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in November 2021Sequence of major events in a virus pandemic
- Responses to the COVID-19 pandemic in October 2020Aspect of the coronavirus outbreak
- Responses to the COVID-19 pandemic in October 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in October 2022Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in September 2020Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in September 2021Aspect of viral disease pandemic
- Responses to the COVID-19 pandemic in September 2022Aspect of viral disease pandemic
- Responsible drug useResponsible drug use seeks to maximize the benefits and minimize the risks associated with
- RestenosisRestenosis is the recurrence of stenosis, a narrowing of a blood vessel, leading to restri
- Restless legs syndromeMedical condition
- Restrictive lung diseaseRestrictive lung diseases are a category of extrapulmonary, pleural, or parenchymal respir
- ResuscitationEmergency correction of acute critical physiological disorders
- Retained placentaAll or part of the placenta remaining in the uterus during the 3rd stage of labor
- Retained surgical instrumentsA retained surgical instrument is any item inadvertently left behind in a patient’s body i
- Retinal migraineRetinal migraine is a retinal disease often accompanied by migraine headache and typically
- Retinoic acid receptor alphaRetinoic acid receptor alpha (RAR-α), also known as NR1B1 (nuclear receptor subfamily 1, g
- RetinopathyDamage to the retina of the eyes
- Reuptake inhibitorType of drug
- RevascularizationIn medical and surgical therapy, revascularization is the restoration of perfusion to a bo
- Reverse triiodothyronineReverse triiodothyronine, also known as rT3, is an isomer of triiodothyronine (T3).
- Reverse zoonosisTransmission of a pathogen from humans to non-human animals
- Rh blood group systemHuman blood group system involving 49 blood antigens
- Rh diseaseBlood disease of the fetus and newborn
- Rheumatic feverPost-streptococcal inflammatory disease
- Rheumatoid arthritisType of autoimmune arthritis
- RheumatologyMedical speciality of inflammatory diseases
- RhinitisIrritation and inflammation of the mucous membrane inside the nose
- RiboflavinVitamin
- RicketsChildhood weak bone disorder
- Rickettsia parkeriSpecies of bacterium
- RickettsiosisA rickettsiosis is a disease caused by intracellular bacteria.
- RifampicinAntibiotic medication
- Rift Valley feverHuman and livestock viral disease
- Right-to-left shuntA right-to-left shunt is a cardiac shunt which allows blood to flow from the right heart t
- RimantadineDrug used to treat influenzavirus A infection
- RinderpestEradicated morbillivirus disease
- Ring fingerThird from the thumb finger of a human hand
- RING finger domainIn molecular biology, a RING (short for Really Interesting New Gene) finger domain is a pr
- Risk factorVariable associated with an increased risk of disease or infection
- RisperidoneAntipsychotic medication
- RituximabBiopharmaceutical drug
- Robert James GravesRobert James Graves FRCS (27 March 1796 – 20 March 1853) was an Anglo-Irish surgeon after
- ROCK2Rho associated coiled-coil containing protein kinase 2 is a protein that in humans is enco
- Roentgen equivalent manThe roentgen equivalent man (rem) is a CGS unit of equivalent dose, effective dose, and co
- RolfingForm of alternative medicine
- Romanowsky stainRomanowsky staining is a prototypical staining technique that was the forerunner of severa
- Root canalHollow part of the root of a tooth
- Root canal treatmentProcedure to disinfect and fortify the interior of a tooth
- RosaceaSkin condition, usually on the face
- RoseolaHuman disease caused by human herpesviruses
- Ross River feverRoss River fever is a mosquito-borne infectious disease caused by infection with the Ross
- Rotavirus vaccineVaccine used to protect against rotavirus infections
- Route of administrationPath by which a drug, fluid, poison, or other substance is taken into the body
- Royal College of PhysiciansBritish professional body of doctors
- Royal College of Surgeons of EnglandProfessional body in England, United Kingdom
- RTS,SRTS,S/AS01 (trade name Mosquirix) is a recombinant protein-based malaria vaccine. It is on
- Running noseFilling of the nasal cavity with fluid mucus
- Rupture of membranesRupture of membranes (ROM) or amniorrhexis is a term used during pregnancy to describe a r
- Russian government response to the COVID-19 pandemicThe government of Russia has initially responded to the COVID-19 pandemic in the country w
- RV 144RV 144, or the Thai trial, was an HIV vaccine clinical trial that was conducted in Thailan