1. RA, also known asRheumatoid arthritis)
  2. Rabbit fever, also known asTularemia)
  3. Rabies
  4. Radiation enteritis
  5. Radiation sickness
  6. Ramsay Hunt syndrome
  7. Rapid gastric emptying, also known asDumping syndrome)
  8. Rapid heartbeat, also known asTachycardia)
  9. Rash, poison ivy, also known asPoison ivy rash)
  10. Raynaud's disease
  11. Reactive arthritis
  12. Reactive attachment disorder
  13. Reading disability, specific, also known asDyslexia)
  14. Rebound headache, also known asMedication overuse headaches)
  15. Rectal cancer
  16. Rectal inflammation, also known asProctitis)
  17. Rectal itching, also known asAnal itching)
  18. Rectal prolapse
  19. Rectal ulcer, also known asSolitary rectal ulcer syndrome)
  20. Rectovaginal fistula
  21. Recurrent breast cancer
  22. Recurrent oral ulcers, also known asCanker sore)
  23. Red eye, also known asSubconjunctival hemorrhage (broken blood vessel in eye))
  24. Reflux, bile, also known asBile reflux)
  25. Reflux, vesicoureteral, also known asVesicoureteral reflux)
  26. Regurgitation, aortic valve, also known asAortic valve regurgitation)
  27. Regurgitation, mitral valve, also known asMitral valve regurgitation)
  28. Reiter's syndrome, also known asReactive arthritis)
  29. REM sleep behavior disorder
  30. Renal artery stenosis
  31. Renal cancer, also known asKidney cancer)
  32. Renal failure, acute, also known asAcute kidney failure)
  33. Renal lithiasis, also known asKidney stones)
  34. Residual limb pain
  35. Respiratory syncytial virus (RSV)
  36. Restless legs syndrome
  37. Retinal detachment
  38. Retinal diseases
  39. Retinoblastoma
  40. Retinopathy, diabetic, also known asDiabetic retinopathy)
  41. Retractile testicle
  42. Retrograde ejaculation
  43. Rett syndrome
  44. Reye's syndrome
  45. Rhabdomyosarcoma
  46. Rheumatic fever
  47. Rheumatoid arthritis
  48. Rhinitis, allergic, also known asHay fever)
  49. Rhinitis, nonallergic, also known asNonallergic rhinitis)
  50. Rhinitis, vasomotor, also known asNonallergic rhinitis)
  51. Rib fracture, also known asBroken ribs)
  52. Rickets
  53. Rift Valley fever, also known asViral hemorrhagic fevers)
  54. Ringing in the ear, also known asTinnitus)
  55. Ringworm (body)
  56. Ringworm (scalp)
  57. Ringworm of the foot, also known asAthlete's foot)
  58. RLS, also known asRestless legs syndrome)
  59. Road rage, also known asIntermittent explosive disorder)
  60. Rocky Mountain spotted fever
  61. Rosacea
  62. Roseola
  63. Rotator cuff injury
  64. Rotavirus
  65. Round back, also known asKyphosis)
  66. RSV, also known asRespiratory syncytial virus (RSV))
  67. Rubella
  68. Rubeola, also known asMeasles)
  69. Rumination syndrome
  70. Runner's knee, also known asPatellofemoral pain syndrome)
  71. Ruptured eardrum (perforated eardrum)
  72. Ruptured spleen
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