| Name |
Triad |
Disease |
| Alkaptonuria Triad | Ochronotic arthritis, Ochronotic pigmentation, Urine darkens on standing | Alkaptonuria |
| Anderson Triad | Bronchiectasis, Cystic fibrosis |
| Beck's triad | Muffled heart sound, Distended neck veins, Hypotension | Cardiac tamponade |
| Charcot's cholangitis triad | Right RUQ Pain, Fever, Jaundice | Ascending cholangitis |
| Charcot's neurologic triad | scanning speech, intention tremor, nystagmus | Multiple sclerosis |
| Congestive Heart Failure Triad | Tachycardia, Tachypnea, Tender hepatomegaly | Congestive Heart Failure |
| Cushing's triad of Increased Intracranial Pressure | Bradycardia, Bradypnea, Hypertension | head injuries |
| Dieulafoy's triad | hyperesthesia of the skin, exquisite tenderness and guarding over McBurney's point | Acute appendicitis |
| Fanconi syndrome triad | Aminoaciduria, Proteinuria, Phosphaturia | Fanconi syndrome |
| Female athlete triad | eating disorders, amenorrhoea, decreased bone mineral density | |
| Gradenigos Triad | Sixth cranial n. Palsy, Persistent ear discharge, Deep seated retro orbital pain | Gradenigo's syndrome |
| Hemobilia - Triad (Triad of Sandblom) | Malena, Obstructive jaundice, Biliary colic | |
| Hemolytic Uremic Syndrome Triad | Anaemia, Thrombocytopenia, Renal failure | |
| Hutchinson's triad | Hutchison's teeth, Interstitial keratitis, Nerve deafness | Congenital syphilis |
| Kartagener Syndrome Triad | Triad of bronchiectasis, Recurrent sinusitis, and, Situs inversus, | Kartagener syndrome |
| Meckler's triad | vomiting, pain and subcutaneous emphysema | Boerhaave syndrome |
| O’ Donoghue Triad (Also known as Unhappy Triad) | Twisting force in a weight bearing knee joint causes injury to Medial collateral ligament, Anterior cruciate ligament, Medial meniscus | |
| Saint's Triad | Gall stones, Diverticulosis, Hiatus hernia | |
| Samter's triad (also known as Acetylsalicylic acid triad or Widal's triad or Francis' triad or Aspirin triad) | Aspirin sensitivity, Nasal polyps, Asthma | Aspirin-induced asthma |
| Tetany in Children - Triad | Stridor, Carpopedal spasm, Convulsions | Tetany |
| Triad of Albinism | Black locks, Occulo-cutaneous Albinism, Deafness of sensorineural type | Albinism |
| Triad of Alport Syndrome | Sensorineural deafness, Progressive renal failure, Ocular anomalies | Alport syndrome |
| Triad of Behcet's Syndrome | Recurrent oral ulcers, Genital ulcers, Iridocyclitis | Behcet's Syndrome |
| Triad of Causes of Biotin Deficiency | Glossitis, Alopecia, Dermatitis | |
| Triad of Hypernephroma | Pain, hematuria, renal mass | Hypernephroma |
| Triad of Kwashiorkor | Growth retardation, Mental changes, Edema | Kwashiorkor |
| Triple Test (for diagnosis of downs syndrome) | Estimation of hcg, Estriol, and AFP | |
| Trotter's Triad | Conductive deafness, Immobility of homolateral soft palate, Trigeminal neuralgia | |
| Unhappy Triad | ACL, MCL, Medial Meniscus injury | Knee Injury |
| Virchow's triad | Stasis, Hypercoagulability, Vessel injury | Venous thrombosis |
| Whipple's Triad | Hypoglycaemia during attacks, S.glucose 10%, Hypergammaglobulinemia, Lytic bone lesions | Insulinoma |
| Classic Triad | Chest pain, Heart failure, Syncope | Aortic Stenosis |