Explore our comprehensive A-Z guide on diseases and conditions. Discover detailed information on definitions, symptoms, causes, and treatments to better understand various health issues.
- Rabies
- Radial Tunnel Syndrome
- Radiation Burn
- Radiation Cystitis
- Radiation Enteritis
- Radiation Heart Disease
- Radiation Sickness
- Radiculopathy
- Radon Gas
- Ragweed Allergy
- Ramsay Hunt Syndrome
- Ranidaphobia
- Ranula
- Rape Trauma Syndrome
- Rare and Orphan Diseases
- Rare Brain Tumors
- Rare Lung Diseases
- Rasmussen’s Encephalitis
- Rat Lungworm
- Rat-Bite Fever
- Raynaud’s Syndrome
- Razor Burn
- Reactive Airway Disease
- Reactive Arthritis (Reiter’s Syndrome)
- Reactive Attachment Disorder (RAD)
- Rebound Headaches
- Rectal Cancer
- Rectal Prolapse
- Rectocele
- Rectovaginal Fistula
- Rectus Sheath Hematoma
- Recurrent Corneal Erosion
- Recurrent Fever Syndromes
- Recurrent Respiratory Papillomatosis
- Redundant Prepuce
- Refeeding Syndrome
- Reflux in Babies
- Refractive Errors
- Refsum Disease
- Reinke’s Edema
- Rejection Sensitive Dysphoria (RSD)
- Relapsing Polychondritis
- Relapsing-Remitting Multiple Sclerosis (RRMS)
- REM Sleep Behavior Disorder (RBD)
- Renal Agenesis
- Renal Angiomyolipoma
- Renal Artery Stenosis
- Renal Cell Carcinoma
- Renal Colic
- Renal Hypertension
- Renal Oncocytoma
- Renal Osteodystrophy
- Renal Papillary Necrosis
- Renal Parenchymal Disease
- Repetitive Strain Injury
- Resistant Hypertension
- Respiratory Acidosis
- Respiratory Alkalosis
- Respiratory Depression (Hypoventilation)
- Respiratory Failure
- Restless Legs Syndrome
- Restrictive Cardiomyopathy
- Retained Products of Conception
- Retinal Detachment
- Retinal Diseases
- Retinal Hemorrhage
- Retinal Tear
- Retinal Vein Occlusion
- Retinitis Pigmentosa
- Retinoblastoma
- Retinopathy Of Prematurity
- Retinoschisis
- Retracted Eardrum
- Retractile Testicle
- Retrograde Ejaculation
- Retrograde Menstruation
- Retroperitoneal Fibrosis
- Retropharyngeal Abscess
- Retroverted Uterus
- Rett Syndrome
- Reversible Cerebral Vasoconstriction Syndrome
- Reye’s Syndrome
- Rh Factor
- Rhabdoid Tumor
- Rhabdomyolysis
- Rhabdomyosarcoma
- Rheumatic Fever
- Rheumatic Heart Disease
- Rheumatoid Arthritis
- Rheumatoid Vasculitis
- Rhinitis Medicamentosa
- Rib Fracture
- Rickets
- Right Bundle Branch Block
- Right-Sided Heart Failure
- Ring Avulsion
- Ringworm
- Rippling Muscle Disease
- Robinow Syndrome
- Rocky Mountain Spotted Fever
- ROHHAD Syndrome
- Rosacea
- Rosai-Dorfman Disease
- Roseola
- Rotator Cuff Tear
- Rotavirus
- Rothmund-Thomson Syndrome
- Roundworms
- RSV (Respiratory Syncytial Virus)
- RSV in Adults
- RSV in Babies & Children
- Rubella (German Measles)
- Rumination Syndrome
- Ruptured Eardrum (Acutely Perforated Tympanic Membrane)
- Ruptured Spleen
- Ruptured Testicle
- Russell-Silver Syndrome