Medicine

Pulmonary embolism

Pulmonary embolism: causes, symptoms, diagnosis and treatment

Pulmonary embolism is an obstruction of blood flow to the lungs, most often from a traveling blood clot; this article explains causes, symptoms, diagnosis, management, and preventi

Pulmonary hypertension

Pulmonology

Pulmonology (Respiratory Medicine)

Pulse

Pulse (heartbeat): physiology, measurement, clinical meaning, and other uses

The pulse is the rhythmic expansion of arteries with each heartbeat. This article covers its physiology, common measurement sites, clinical significance, heart sounds, and the unre

Pus

Pus: composition, formation, clinical significance, and management

Q fever

Q fever (infection with Coxiella burnetii)

Qigong

Qigong: Traditional Chinese Practice of Movement, Breath, and Mindfulness

Qigong is a Chinese system combining posture, movement, breath and meditation to promote health, martial skill, and spiritual development. This article outlines forms, history, use

Quack

Quack: the duck sound and the term for a charlatan

Quadrangular space

Quadrangular space of the shoulder: anatomy and clinical relevance

Quarantine

Quinine

Quinine: natural antimalarial alkaloid from Cinchona bark

Rabies

Rabies: causes, transmission, symptoms, and prevention

Rabies is a viral zoonotic disease that causes acute encephalitis and is almost always fatal once symptoms start. This article covers its agent, spread, clinical signs, prevention,

Radiation therapy

Radiation therapy: principles, techniques, and clinical uses

Radiation therapy uses ionizing radiation to treat cancer and some non-malignant conditions. This article explains how it works, common techniques, clinical roles, planning and saf

Radiology

Radiology: Medical Imaging, Methods, History, and Applications

Relapsing fever

Relapsing fever: cause, symptoms, transmission and management

Remdesivir

Remission (medicine)

Renal cell carcinoma

Renal cell carcinoma: overview, presentation, diagnosis, and management

Renal disease

Repetitive strain injury

Repetitive strain injury (RSI): causes, symptoms, diagnosis and management

Residency (medicine)

Medical residency: postgraduate clinical training for physicians

Respiratory care

Respiratory care (respiratory therapy)

Respiratory disease

Respiratory syncytial virus

Respiratory syncytial virus (RSV): causes, symptoms, prevention, and treatment

Respiratory tract infection

Respiratory tract infection: causes, types, symptoms and prevention

Restless legs syndrome

Restless Legs Syndrome (RLS)

Resuscitation

Resuscitation: principles, methods and significance

Retinal migraine

Reye's syndrome

Rhabdomyosarcoma

Rhabdomyosarcoma: pediatric soft-tissue cancer arising from skeletal muscle precursors

Rheumatic fever

Rheumatic fever: causes, signs, diagnosis and prevention

Rheumatism

Rheumatism: overview, forms, history and clinical significance

Rheumatism is a traditional umbrella term for disorders that cause pain, stiffness or inflammation of joints, muscles and connective tissue; it includes osteoarthritis, rheumatoid

Rheumatoid arthritis

Rheumatoid arthritis: causes, symptoms, diagnosis and management

Rhytidectomy

Rhytidectomy (Facelift): Overview, Techniques, Risks, and Recovery

Rickets

Rickets: childhood bone-softening due to vitamin D and mineral deficiency

Right upper quadrant (abdomen)

Ringworm

Rohypnol

Rohypnol (flunitrazepam): medical uses, effects, misuse, and legal status

Ronald Reagan UCLA Medical Center

Rotavirus

Rotavirus: cause, transmission, symptoms, prevention, and global impact

Rubella

Rubella (German measles): causes, symptoms, congenital risks, and prevention

Safe sex

Safe sex: practices, methods, and public health considerations

Saline (medicine)

Salivary gland neoplasm

Sarcoma

Sarcoma: cancers of connective (mesenchymal) tissues

Sarcoma is a group of malignancies arising from mesenchymal (connective) tissues such as bone, cartilage, fat and blood vessels. Subtypes, diagnosis, treatment and distinguishing f

Scabies

Scabies: causes, symptoms, transmission, diagnosis and treatment

Scalpel

Scalpel: surgical cutting instrument, materials, history, and uses

Scarlet fever

Scarlet fever (scarlatina): causes, symptoms, treatment and history