1. Sacral dimple
  2. Sacroiliitis
  3. SAD, also known asSeasonal affective disorder (SAD))
  4. Salivary gland tumors
  5. Salmonella infection
  6. Salmonellosis, also known asSalmonella infection)
  7. Sarcoidosis
  8. Sarcoma
  9. Sarcoma, bone cancer, also known asBone cancer)
  10. Sarcoma, soft tissue, also known asSoft tissue sarcoma)
  11. SBBO, also known asSmall intestinal bacterial overgrowth (SIBO))
  12. Scabies
  13. SCAD, also known asSpontaneous coronary artery dissection (SCAD))
  14. Scalded mouth syndrome, also known asBurning mouth syndrome)
  15. Scarlatina, also known asScarlet fever)
  16. Scarlet fever
  17. Schizoaffective disorder
  18. Schizoid personality disorder
  19. Schizophrenia
  20. Schizophrenia, adolescent, also known asChildhood schizophrenia)
  21. Schizophrenia, childhood, also known asChildhood schizophrenia)
  22. Schizophrenia, juvenile, also known asChildhood schizophrenia)
  23. Schizotypal personality disorder
  24. Schwannoma
  25. SCI, also known asSpinal cord injury)
  26. Sciatica
  27. Scleroderma
  28. Sclerosing cholangitis, also known asPrimary sclerosing cholangitis)
  29. Sclerosing mesenteritis
  30. Sclerosis, multiple, also known asMultiple sclerosis)
  31. Sclerosis, systemic, also known asScleroderma)
  32. Scoliosis
  33. Scorpion sting
  34. Scrotal masses
  35. Seasonal affective disorder (SAD)
  36. Seasonal allergy, also known asHay fever)
  37. Sebaceous carcinoma
  38. Sebaceous cysts, also known asEpidermoid cysts)
  39. Seborrheic dermatitis
  40. Seborrheic keratosis
  41. Secondary brain cancer, also known asBrain metastases)
  42. Secondary hypertension
  43. Seizure disorder, also known asEpilepsy)
  44. Seizure, absence, also known asAbsence seizure)
  45. Seizure, febrile, also known asFebrile seizure)
  46. Seizure, grand mal, also known asGrand mal seizure)
  47. Seizure, petit mal, also known asAbsence seizure)
  48. Seizure, temporal lobe, also known asTemporal lobe seizure)
  49. Seizures
  50. Selective IgA deficiency
  51. Self harming, also known asSelf-injury/cutting)
  52. Self-injury/cutting
  53. Separation anxiety disorder
  54. Sepsis
  55. Septal defect, atrial, also known asAtrial septal defect (ASD))
  56. Septal defect, atrioventricular, also known asAtrioventricular canal defect)
  57. Septal defect, ventricular, also known asVentricular septal defect (VSD))
  58. Septic arthritis
  59. Serotonin syndrome
  60. Severe acute respiratory syndrome, also known asSevere acute respiratory syndrome (SARS))
  61. Severe acute respiratory syndrome (SARS)
  62. Severe brain injury, coma, also known asComa)
  63. Sex headaches
  64. Sexual dysfunction, female, also known asFemale sexual dysfunction)
  65. Sexual obsession, also known asCompulsive sexual behavior)
  66. Sexually transmitted diseases (STDs)
  67. Shaken baby syndrome
  68. Shellfish allergy
  69. Shigella infection
  70. Shin splints
  71. Shingles
  72. Short bowel syndrome
  73. Shoulder dislocation, also known asDislocated shoulder)
  74. Shy-Drager syndrome, also known asMultiple system atrophy (MSA))
  75. SIBO, also known asSmall intestinal bacterial overgrowth (SIBO))
  76. Sick sinus syndrome
  77. Sickle cell anemia
  78. SIDS, also known asSudden infant death syndrome (SIDS))
  79. Sin Nombre virus infection, also known asHantavirus pulmonary syndrome)
  80. Sinus headaches
  81. Sinusitis, acute, also known asAcute sinusitis)
  82. Sinusitis, chronic, also known asChronic sinusitis)
  83. Sjogren's syndrome
  84. Skin cancer
  85. Skin cancer, melanoma, also known asMelanoma)
  86. Skin, itchy, also known asItchy skin (pruritus))
  87. Skipped heartbeats, also known asHeart palpitations)
  88. Slapped cheek disease, also known asParvovirus infection)
  89. Sleep apnea
  90. Sleep apnea in children, obstructive, also known asPediatric obstructive sleep apnea)
  91. Sleep apnea, central, also known asCentral sleep apnea)
  92. Sleep apnea, obstructive, also known asObstructive sleep apnea)
  93. Sleep disorders
  94. Sleep terrors, also known asSleep terrors (night terrors))
  95. Sleep terrors (night terrors)
  96. Sleepiness, daytime, also known asNarcolepsy)
  97. Sleeplessness, also known asInsomnia)
  98. Sleepwalking
  99. Slipped disk, also known asHerniated disk)
  100. Slow heartbeat, also known asBradycardia)
  101. Small bowel bacterial overgrowth, also known asSmall intestinal bacterial overgrowth (SIBO))
  102. Small bowel cancer
  103. Small bowel prolapse, also known asSmall bowel prolapse (enterocele))
  104. Small bowel prolapse (enterocele)
  105. Small intestinal bacterial overgrowth (SIBO)
  106. Small intestine prolapse, also known asSmall bowel prolapse (enterocele))
  107. Small vessel disease
  108. Smallpox
  109. Snoring
  110. Social anxiety disorder (social phobia)
  111. Soft palate cancer
  112. Soft tissue sarcoma
  113. Solar keratosis, also known asActinic keratosis)
  114. Solar lentigines, also known asAge spots (liver spots))
  115. Solitary fibrous tumor
  116. Solitary rectal ulcer syndrome
  117. Somatic symptom disorder
  118. Somnambulism, also known asSleepwalking)
  119. Sore throat
  120. Spasmodic torticollis, also known asCervical dystonia)
  121. Specific phobias
  122. Specific reading disability, also known asDyslexia)
  123. Spermatocele
  124. Spider bites
  125. Spina bifida
  126. Spinal arteriovenous malformation (AVM)
  127. Spinal cord injury
  128. Spinal cord tumor
  129. Spinal curvature, also known asScoliosis)
  130. Spinal headaches
  131. Spinal stenosis
  132. Splenomegaly, also known asEnlarged spleen (splenomegaly))
  133. Spondylosis, cervical, also known asCervical spondylosis)
  134. Spontaneous coronary artery dissection (SCAD)
  135. Sprained ankle
  136. Sprains
  137. Squamous cell carcinoma of the skin
  138. Stage 4 prostate cancer
  139. Stammering, also known asStuttering)
  140. Staph infections
  141. STDs, also known asSexually transmitted diseases (STDs))
  142. Steele-Richardson-Olszewski syndrome, also known asProgressive supranuclear palsy)
  143. Stein-Leventhal syndrome, also known asPolycystic ovary syndrome (PCOS))
  144. Stenosing tenosynovitis, also known asTrigger finger)
  145. Stenosis, aortic valve, also known asAortic valve stenosis)
  146. Stenosis, mitral valve, also known asMitral valve stenosis)
  147. Stenosis, pulmonary valve, also known asPulmonary valve stenosis)
  148. Stenosis, pyloric, also known asPyloric stenosis)
  149. Stenosis, spinal, also known asSpinal stenosis)
  150. Stevens-Johnson syndrome
  151. Stickler syndrome
  152. Stings, bee, also known asBee sting)
  153. Stings, jellyfish, also known asJellyfish stings)
  154. Stings, scorpion, also known asScorpion sting)
  155. Stomach cancer
  156. Stomach flu, also known asViral gastroenteritis (stomach flu))
  157. Stomach pain, nonulcer, also known asFunctional dyspepsia)
  158. Stomach polyps
  159. Stomatodynia, also known asBurning mouth syndrome)
  160. Stool holding, also known asEncopresis)
  161. Strawberry hemangioma, also known asHemangioma)
  162. Strep throat
  163. Stress cardiomyopathy, also known asBroken heart syndrome)
  164. Stress fractures
  165. Stress incontinence
  166. Stretch marks
  167. Stroke
  168. Stump pain, also known asPhantom pain)
  169. Stump pain, also known asResidual limb pain)
  170. Stuttering
  171. Stye (sty)
  172. Subarachnoid hemorrhage
  173. Subconjunctival hemorrhage (broken blood vessel in eye)
  174. Subfertility, also known asInfertility)
  175. Substance abuse disorder, also known asDrug addiction (substance use disorder))
  176. Substance use disorder, also known asDrug addiction (substance use disorder))
  177. Sudden cardiac arrest
  178. Sudden infant death syndrome (SIDS)
  179. Suicide, also known asSuicide and suicidal thoughts)
  180. Suicide and suicidal thoughts
  181. Sun allergy
  182. Sun poisoning, also known asPolymorphous light eruption)
  183. Sunburn
  184. Sunken chest, also known asPectus excavatum)
  185. Supranuclear palsy, also known asProgressive supranuclear palsy)
  186. Supraventricular tachycardia
  187. Suspicious breast lumps
  188. SVT, also known asSupraventricular tachycardia)
  189. Sweating and body odor
  190. Sweating, abnormally excessive, also known asHyperhidrosis)
  191. Sweet's syndrome
  192. Swimmer's ear
  193. Swimmer's itch
  194. Swollen knee
  195. Swollen lymph nodes
  196. Syndrome X, also known asMetabolic syndrome)
  197. Synostosis, also known asCraniosynostosis)
  198. Synovial sarcoma
  199. Syphilis
  200. Syringomyelia
  201. Systemic capillary leak syndrome
  202. Systemic lupus erythematosus, also known asLupus)
  203. Systemic mastocytosis
  204. Systemic sclerosis, also known asScleroderma)
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