| 1. | Abdominal Pain (3 recruiting studies) |
| 2. | Abscess (2 recruiting studies) |
| 3. | Adhesions (5 recruiting studies) |
| 4. | Aging, Premature (1 recruiting study) |
| 5. | Alopecia (2 recruiting studies) |
| 6. | Amblyopia (3 recruiting studies) |
| 7. | Amenorrhea (3 recruiting studies) |
| 8. | Amnesia (4 recruiting studies) |
| 9. | Angina Pectoris (9 recruiting studies) |
| 10. | Angina, Unstable (3 recruiting studies) |
| 11. | Anorexia (6 recruiting studies) |
| 12. | Anoxemia (2 recruiting studies) |
| 13. | Anoxia (2 recruiting studies) |
| 14. | Aphasia (4 recruiting studies) |
| 15. | Apnea (10 recruiting studies) |
| 16. | Apraxia, Ideomotor (2 recruiting studies) |
| 17. | Apraxias (3 recruiting studies) |
| 18. | Arrhythmia (9 recruiting studies) |
| 19. | Arteriovenous Fistula (1 recruiting study) |
| 20. | Arthralgia (2 recruiting studies) |
| 21. | Articulation Disorders (2 recruiting studies) |
| 22. | Ascites (2 recruiting studies) |
| 23. | Asphyxia (1 recruiting study) |
| 24. | Asthenia (8 recruiting studies) |
| 25. | Ataxia (5 recruiting studies) |
| 26. | Atrial Fibrillation (3 recruiting studies) |
| 27. | Atrophy (15 recruiting studies) |
| 28. | Auditory Perceptual Disorders (1 recruiting study) |
| 29. | Back Pain (8 recruiting studies) |
| 30. | Benign Essential Tremor Syndrome (4 recruiting studies) |
| 31. | Blast Crisis (3 recruiting studies) |
| 32. | Blindness (4 recruiting studies) |
| 33. | Blister (1 recruiting study) |
| 34. | Body Temperature Changes (2 recruiting studies) |
| 35. | Body Weight Changes (42 recruiting studies) |
| 36. | Brown-Sequard Syndrome (1 recruiting study) |
| 37. | Cachexia (9 recruiting studies) |
| 38. | Cardiac Complexes, Premature (2 recruiting studies) |
| 39. | Cardiomegaly (1 recruiting study) |
| 40. | Cerebral Hemorrhage (3 recruiting studies) |
| 41. | Chest Pain (9 recruiting studies) |
| 42. | Chorea (4 recruiting studies) |
| 43. | Choristoma (1 recruiting study) |
| 44. | Choroidal Neovascularization (3 recruiting studies) |
| 45. | Chromosome Aberrations (2 recruiting studies) |
| 46. | Chromosome Deletion (1 recruiting study) |
| 47. | Colonic Polyps (2 recruiting studies) |
| 48. | Communication Disorders (14 recruiting studies) |
| 49. | Constipation (1 recruiting study) |
| 50. | Constriction, Pathologic (7 recruiting studies) |
| 51. | Convulsions (19 recruiting studies) |
| 52. | Cysts (5 recruiting studies) |
| 53. | Deafness (3 recruiting studies) |
| 54. | Death (3 recruiting studies) |
| 55. | Death, Sudden (2 recruiting studies) |
| 56. | Death, Sudden, Cardiac (1 recruiting study) |
| 57. | Delirium (62 recruiting studies) |
| 58. | Diarrhea (10 recruiting studies) |
| 59. | Dilatation, Pathologic (1 recruiting study) |
| 60. | Dysarthria (2 recruiting studies) |
| 61. | Dyskinesias (13 recruiting studies) |
| 62. | Dyslexia (4 recruiting studies) |
| 63. | Dyslexia, Acquired (1 recruiting study) |
| 64. | Dyspnea (1 recruiting study) |
| 65. | Dystonia (11 recruiting studies) |
| 66. | Edema (9 recruiting studies) |
| 67. | Emaciation (8 recruiting studies) |
| 68. | Emphysema (2 recruiting studies) |
| 69. | Encopresis (1 recruiting study) |
| 70. | Facial Pain (3 recruiting studies) |
| 71. | Facial Paralysis (1 recruiting study) |
| 72. | Fatigue (12 recruiting studies) |
| 73. | Fetal Growth Retardation (1 recruiting study) |
| 74. | Fever (13 recruiting studies) |
| 75. | Fibrosis (35 recruiting studies) |
| 76. | Fistula (2 recruiting studies) |
| 77. | Gastrointestinal Hemorrhage (2 recruiting studies) |
| 78. | Graft Occlusion, Vascular (1 recruiting study) |
| 79. | Granuloma (12 recruiting studies) |
| 80. | Growth Disorders (3 recruiting studies) |
| 81. | Hallucinations (4 recruiting studies) |
| 82. | Headache (2 recruiting studies) |
| 83. | Hearing Disorders (7 recruiting studies) |
| 84. | Hearing Loss (7 recruiting studies) |
| 85. | Heart Block (2 recruiting studies) |
| 86. | Hemiplegia (7 recruiting studies) |
| 87. | Hemolysis (5 recruiting studies) |
| 88. | Hemorrhage (16 recruiting studies) |
| 89. | Hernia (3 recruiting studies) |
| 90. | Hot Flashes (13 recruiting studies) |
| 91. | Hyperalgesia (2 recruiting studies) |
| 92. | Hyperbilirubinemia (1 recruiting study) |
| 93. | Hyperkinesis (13 recruiting studies) |
| 94. | Hyperoxia (1 recruiting study) |
| 95. | Hyperplasia (11 recruiting studies) |
| 96. | Hypertrophy (5 recruiting studies) |
| 97. | Hypothermia (2 recruiting studies) |
| 98. | Infarction (26 recruiting studies) |
| 99. | Inflammation (27 recruiting studies) |
| 100. | Intestinal Polyps (2 recruiting studies) |
| 101. | Intestinal Volvulus (1 recruiting study) |
| 102. | Intracranial Hemorrhages (4 recruiting studies) |
| 103. | Intraoperative Complications (1 recruiting study) |
| 104. | Inversion (Genetics) (1 recruiting study) |
| 105. | Jaundice (1 recruiting study) |
| 106. | Jaundice, Neonatal (1 recruiting study) |
| 107. | Language Development Disorders (1 recruiting study) |
| 108. | Language Disorders (14 recruiting studies) |
| 109. | Learning Disorders (3 recruiting studies) |
| 110. | Low Back Pain (6 recruiting studies) |
| 111. | Memory Disorders (7 recruiting studies) |
| 112. | Menstruation Disturbances (5 recruiting studies) |
| 113. | Mental Retardation (14 recruiting studies) |
| 114. | Metaplasia (4 recruiting studies) |
| 115. | Multiple Organ Failure (6 recruiting studies) |
| 116. | Muscle Cramp (7 recruiting studies) |
| 117. | Muscle Hypertonia (1 recruiting study) |
| 118. | Muscle Hypotonia (1 recruiting study) |
| 119. | Muscle Rigidity (1 recruiting study) |
| 120. | Muscle Spasticity (4 recruiting studies) |
| 121. | Muscle Weakness (4 recruiting studies) |
| 122. | Muscular Atrophy (4 recruiting studies) |
| 123. | Mutism (1 recruiting study) |
| 124. | Myoclonus (3 recruiting studies) |
| 125. | Nausea (9 recruiting studies) |
| 126. | Neck Pain (4 recruiting studies) |
| 127. | Necrosis (3 recruiting studies) |
| 128. | Neoplasm Metastasis (280 recruiting studies) |
| 129. | Neoplasm Recurrence, Local (1 recruiting study) |
| 130. | Neoplasms, Unknown Primary (5 recruiting studies) |
| 131. | Neoplastic Processes (123 recruiting studies) |
| 132. | Neovascularization, Pathologic (6 recruiting studies) |
| 133. | Nerve Degeneration (3 recruiting studies) |
| 134. | Neuralgia (4 recruiting studies) |
| 135. | Neurobehavioral Manifestations (36 recruiting studies) |
| 136. | Neurologic Manifestations (122 recruiting studies) |
| 137. | Neuromuscular Manifestations (4 recruiting studies) |
| 138. | Nonsyndromic Hereditary Hearing Impairment (1 recruiting study) |
| 139. | Obesity (39 recruiting studies) |
| 140. | Ophthalmoplegia (1 recruiting study) |
| 141. | Osteonecrosis (1 recruiting study) |
| 142. | Pain (90 recruiting studies) |
| 143. | Paralysis (19 recruiting studies) |
| 144. | Paraparesis (3 recruiting studies) |
| 145. | Paraparesis, Spastic (3 recruiting studies) |
| 146. | Paraplegia (3 recruiting studies) |
| 147. | Paresis (2 recruiting studies) |
| 148. | Paresthesia (1 recruiting study) |
| 149. | Pathologic Processes (177 recruiting studies) |
| 150. | Pathological Conditions, Anatomical (6 recruiting studies) |
| 151. | Pathological Conditions, Signs and Symptoms (387 recruiting studies) |
| 152. | Pelvic Pain (4 recruiting studies) |
| 153. | Peptic Ulcer Hemorrhage (2 recruiting studies) |
| 154. | Perceptual Disorders (4 recruiting studies) |
| 155. | Philadelphia Chromosome (29 recruiting studies) |
| 156. | Polyps (2 recruiting studies) |
| 157. | Postoperative Complications (15 recruiting studies) |
| 158. | Postoperative Nausea and Vomiting (2 recruiting studies) |
| 159. | Premenstrual Syndrome (4 recruiting studies) |
| 160. | Prolapse (1 recruiting study) |
| 161. | Pruritus (1 recruiting study) |
| 162. | Psychomotor Agitation (8 recruiting studies) |
| 163. | Psychomotor Disorders (2 recruiting studies) |
| 164. | Purpura (3 recruiting studies) |
| 165. | Quadriplegia (3 recruiting studies) |
| 166. | Reperfusion Injury (1 recruiting study) |
| 167. | Sciatica (2 recruiting studies) |
| 168. | Sclerosis (46 recruiting studies) |
| 169. | Seizures (19 recruiting studies) |
| 170. | Sensation Disorders (14 recruiting studies) |
| 171. | Sepsis Syndrome (2 recruiting studies) |
| 172. | Shock (7 recruiting studies) |
| 173. | Shock, Cardiogenic (1 recruiting study) |
| 174. | Shock, Hemorrhagic (1 recruiting study) |
| 175. | Shock, Septic (4 recruiting studies) |
| 176. | Short Bowel Syndrome (2 recruiting studies) |
| 177. | Shoulder Pain (1 recruiting study) |
| 178. | Signs and Symptoms (387 recruiting studies) |
| 179. | Signs and Symptoms, Digestive (25 recruiting studies) |
| 180. | Signs and Symptoms, Respiratory (3 recruiting studies) |
| 181. | Skin Manifestations (2 recruiting studies) |
| 182. | Sleep Deprivation (4 recruiting studies) |
| 183. | Sleep Disorders (21 recruiting studies) |
| 184. | Somatosensory Disorders (2 recruiting studies) |
| 185. | Spasm (1 recruiting study) |
| 186. | Spasmodic Dysphonia (6 recruiting studies) |
| 187. | Spastic Dysphonia (6 recruiting studies) |
| 188. | Speech Disorders (8 recruiting studies) |
| 189. | Splenomegaly (1 recruiting study) |
| 190. | Stress (36 recruiting studies) |
| 191. | Stuttering (6 recruiting studies) |
| 192. | Subarachnoid Hemorrhage (2 recruiting studies) |
| 193. | Suppuration (2 recruiting studies) |
| 194. | Supranuclear Palsy, Progressive (2 recruiting studies) |
| 195. | Surgical Wound Infection (1 recruiting study) |
| 196. | Syncope (1 recruiting study) |
| 197. | Tachycardia (1 recruiting study) |
| 198. | Tachycardia, Ventricular (1 recruiting study) |
| 199. | Taste Disorders (1 recruiting study) |
| 200. | Thinness (1 recruiting study) |
| 201. | Tics (12 recruiting studies) |
| 202. | Tinnitus (1 recruiting study) |
| 203. | Torticollis (3 recruiting studies) |
| 204. | Tremor (7 recruiting studies) |
| 205. | Trisomy (1 recruiting study) |
| 206. | Ulcer (28 recruiting studies) |
| 207. | Vascular Fistula (1 recruiting study) |
| 208. | Vision Disorders (4 recruiting studies) |
| 209. | Vocal Cord Paralysis (1 recruiting study) |
| 210. | Voice Disorders (7 recruiting studies) |
| 211. | Vomiting (10 recruiting studies) |
