Pathology
- rash
- Rashes
- Rasmussens Encephalitis
- Rat-bite fever
- Raynauds disease
- Reflex sympathetic dystrophy
- reflux
- Reiters Syndrome
- Relapsing fever
- Renal Vein Thrombosis
- repetitive stress injury
- Respiratory syncytial virus infection
- Restless Legs Syndrome
- Retinal detachment
- Retinal diseases
- Retinoblastoma
- Retinopathy
- Reyes syndrome
- Rhabdomyosarcoma
- rheumatic