• Rabies

• Radiation Exposure

• Raynaud's Disease

• Rectal Bleeding

• Rectal Prolapse

• Reflex Sympathetic Dystrophy - See Complex Regional Pain Syndrome

• Regional Enteritis - See Crohn's Disease

• Reiter's Syndrome

• Renal Artery Stenosis - See Renovascular Hypertension

• Renal Cell Carcinoma - See Kidney Cancer

• Renal Hypertension - See Renovascular Hypertension

• Renovascular Hypertension

• Repetitive Strain Injury (RSI)

• Restless Legs

• Restrictive Cardiomyopathy

• Retinal Detachment - See Detached Retina

• Retinal Vessel Occlusion

• Retinitis Pigmentosa

• Retinoblastoma

• Retinopathy of Prematurity

• Rett Syndrome

• Reye Syndrome

• Rh Disease

• Rhabdomyosarcoma and Other Soft-Tissue Sarcomas

• Rheumatic Fever

• Rheumatoid Arthritis

See also: Juvenile Rheumatoid Arthritis

• Rhinitis

• Right Sided Heart Failure - See Cor Pulmonale

• Ringworm - See Tinea Infections

• Rocky Mountain Spotted Fever

• Rosacea

• Rotator Cuff Injuries

• Roundworms

• RSV (Respiratory Syncytial Virus)

• Rubella

• Runner's Knee