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  • Rabies
  • Radial nerve palsy
  • Rash, annular
  • Rash, desquamative
  • Rash, eczematous
  • Rash, facial
  • Rash, figurate (shaped)
  • Rash, general DDx
  • Rash, groin
  • Rash, intertriginous
  • Rash, malar
  • Rash, morbilliform
  • Rash, palms and soles
  • Rash, scaly
  • Rash and abdominal pain
  • Rash and fever
  • Raynaud's syndrome
  • Reactive arthritis
  • Rectal pain
  • Rectal prolapse
  • Recurrent abortion
  • Recurrent pneumonia
  • Recurrent respiratory tract infection
  • Red eye
  • Red eye, circumcorneal
  • Red eye and eye pain
  • Reflexes, delayed relaxation
  • Reflex sympathetic dystrophy
  • Reflux, gastroesophageal
  • Reiter's syndrome
  • Relapsing or recurrent fever
  • Relapsing polychondritis
  • Relative bradycardia
  • Renal artery stenosis
  • Renal cell carcinoma
  • Renal cysts
  • Renal failure, acute
  • Renal failure, chronic
  • Renal failure in HIV/AIDS
  • Renal tubular acidosis
  • Renal tumor
  • Respiration, Cheyne-Stokes
  • Respiratory acidosis
  • Respiratory alkalosis
  • Respiratory failure, acute
  • Respiratory syncytial virus
  • Respiratory tract infection, upper
  • Respiratory tract infections, recurrent
  • Restrictive cardiomyopathy
  • Restrictive disease on PFTs
  • Retinal artery occlusion
  • Retinal detachment
  • Retinal vein occlusion
  • Retinitis
  • Retinopathy
  • Rhabdomyolysis
  • Rheumatic fever, acute
  • Rheumatoid arthritis
  • Rhinitis
  • Rickets
  • Rickettsial diseases
  • Right atrial enlargement, EKG
  • Right axis deviation, EKG
  • Right to left shunt
  • Rigidity
  • Ringworm, body
  • River blindness
  • Rocky Mountain spotted fever
  • Rosacea
  • Rotator cuff disorder
  • RSV
  • Rubella (German measles)
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