A medical triad is a group of three signs or symptoms, the result of injury to three organs, which characterise a specific medical condition.
| NAME OF TRIAD | ELEMENTS |
| ACHALASIA | Dysphagia Regurgitation Weight loss |
| ALPORTS SYNDROME | Sensorineural deafness Progressive renal failure Ocular anomalies |
| AMYAND’S TRIAD | Amyand’s hernia Appendicitis Undescended testis |
| BECK’S TRIAD | Muffled heart sound Distended neck veins Hypotension |
| BEHCET SYNDROME | Iridocyclitis Recurrent oral ulcers Genital ulcers |
| BORCHARD’S TRIAD | Severe epigastric pain Retching without vomiting Inability to pass a nasogastric tube |
| CARNEY TRIAD | Gastrointestinal stromal tumor Pulmonary chondroma Extra-adrenal paraganglioma |
| CHARCOT’S TRIAD | Jaundice Right Upper Quadrant Pain Fever |
| CROHN’S DISEASE | Abdominal pain Diarrhea Weight loss |
| CUSHING’S TRIAD | Bradycardia Bradypnea Hypertension |
| DIEULAFOY’S TRIAD | Tenderness Muscular contraction Skin hyperesthesia at the McBurney point |
| ENTEROCUTANEOUS FISTULAS | Sepsis Fluid and electrolyte imbalance Malnutrition |
| GALEZIA TRIAD | Dupuytren’s contracture Retroperitoneal fibrosis Peyronie’s disease of penis |
| GRADENIGO’S TRIAD | Sixth cranial nerve palsy Persistent ear discharge Deep seated retro orbital pain |
| FANCONI SYNDROME TRIAD | Aminoaciduria Proteinuria Phosphaturia |
| GERD (gastroesophageal reflux disease) | Heartburn Regurgitation Disfagia |
| GRAVES DISEASE TRIAD | Goiter Exophthalmos Pretibial myxedema |
| HAEMOBILIA | Right upper quadrant pain Jaundice Upper gastrointestinal bleeding |
| HEMOLYTIC–UREMIC SYNDROME TRIAD | Anaemia Thrombocytopenia Kidney failure |
| HORNER’S SYNDROME | Ptosis Miosis Anhidrosis |
| HUTCHINSON’S TRIAD | Hutchinson’s teeth Interstitial keratitis Nerve deafness |
| INTESTINAL OBSTRUCTION | Abdominal pain Vomiting Obstipation |
| KWASHIORKOR’S TRIAD | Growth retardation Mental changes Edema |
| LENK TRIAD | Acute flank pain Flank mass Hypovolemic shock |
| MACKLER’S TRIAD | Vomiting, Chest pain Subcutaneous emphysema |
| MASS LESION BRAIN | Focal deficits Seisures Raised intracranial pressure |
| MEIGS’ SYNDROME | Ascites Pleural effusion Benign ovarian tumor |
| MELKERSON SYNDROME | Fissured tongue Recurrent facial paralysis Swelling of lips |
| MELTZER’S TRIAD | Purpura Arthralgias Weakness/myalgias |
| MEN 1 (WERMER SYNDROME) | Tumor in the anterior pituitary gland Hyperplasia of the parathyroids Pancreaticoduodenal endocrine tumors |
| MENIERE’S DISEASE | Intermittent attacks of vertigo Fluctuating Sensorineural hearing loss/tinnitus |
| MILLER FISHER SYNDROME | Ataxia Areflexia Acute external ophtalmoplegia |
| MURPHY’S TRIAD | Pain Vomiting Fever (in this sequence) |
| NORMAL PRESSURE HYDROCEPHALUS | Gait disturbance Incontinence Cognitive decline |
| OSLERS TRIAD | Telangiectasia Capillari fragility Hereditary hemorrhagic diathesis |
| PARKINSON TRIAD | Pin rolling tremors Rigidity Bradykinesia |
| PHEOCHROMOCYTOMA | Headache Diaphoresis Palpitations |
| PLUMMER VINSON SYNDROME | Glossitis Oesophageal webs Iron deficiency anaemia |
| PORTAL TRIAD | Portal vein Hepatic artery Bile duct |
| PRUNE-BELLY TRIAD | Deficient abdominal musculature Cryptorchidism Urinary tract abnormalities |
| QUINCKE’S TRIAD | Jaundice Right upper quadrant pain Upper gastrointestinal bleeding |
| REITER’S DISEASE | Uretritis Conjunctivitis Polyarthritis |
| REITER’S SYNDROME TRIAD | Hematuria Fever Renal mass |
| RIGLER’S TRIAD | Small bowel obstruction Gallstone outside the gallbladder Air in the bile ducts |
| RUPTURED ABDOMINAL AORTIC ANEURYSM | Severe abdominal and/or back pain Hypotension Pulsatile abdominal mass |
| SAINT’S TRIAD | Gall stones Diverticulosis Hiatus hernia |
| SAMTER TRIAD | Nasal polyp Bronchial asthma Aspirin intolerante |
| SJOGREN’S SYNDROME | Keratoconjuctivitis Xerostomis Autoimmune disorders |
| TILLAUX TRIAD | Fluctuant swelling (cyst) near the umblicus Tillaux sign (moves freely in direction vertical on the attachment of mesentery) Traversed band of resonance |
| TRIAD OF COAGULOPATHY | Acidosis Hypothermia Physiological exhaustion |
| TRIAD OF DEATH | Hypothermia Acidosis Coagulopathy |
| TRIAD OF HYPERNEPHROMA | Pain Hematuria Renal mass |
| TRIAD OF MYCETOMA | Painless subcutaneous mass Multiple sinuses Sieropurulent discharge |
| TRIAD OF OPIOID OVERDOSE | Central Nervous System depression Respiratory depression Pinpoint pupils |
| TROTTER’S TRIAD | Conductive hearing loss Ipsilateral immobility of soft palate Ipsilateral temporoparietal neuralgia |
| URETHRAL INJURY | Blood at the urethral meatus Inability to void Palpably distended bladder |
| VIRCHOW’S TRIAD | Stasis Hypercoagulability Vessel injury |
| WHIPPLE’S TRIADE (INSULINOMA) | Symptoms of hypoglycemia after fasting or exercise Plasma glucose levels<2.8 mmol/L (<40mg/dl) Relief of symptoms on intravenous administration of glucose |
| ZOLLINGER-ELLISON SYNDROME | Gastric acid hypersecretion Hypergastrinemia Peptic ulcer disease and diarrhea |