Everyone Healthy
Disease classifications
Browse diseases using the corrected two-level structure: broad disease group first, then the second-level classification heading such as pituitary disorders or thyroid disorders.
Main classifications
Browse diseases by main classification
Explore the broad disease groups, then open their next-level classifications and linked diseases.
1
Nutritional
Open classification
2
Gastrointestinal
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3
Endocrine & Metabolic
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4
Hepatic & Biliary
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5
Musculoskeletal & Connective Tissue
Open classification
6
Pulmonary
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7
E.N.T Disorders
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8
Eye Disorders
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9
Dermatologic
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10
Hematology & Oncology
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11
Immunology & Allergic
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12
Infectious Diseases
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13
Psychiatric
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14
Neurologic
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15
Genitourinary
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16
Gynecology & Obstetrics
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17
Cardiovascular
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18
Injuries
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19
Poisoning
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20
Pediatrics
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Browse
Find a second-level classification heading
Second-level classification headings
All matching upper classification headings
292 headings
Gastrointestinal
#3Esophageal and Swallowing Disorders15 diseases
#65Acute Abdomen and Surgical Gastroenterology8 diseases
#66Gastritis and Peptic Ulcer Disease6 diseases
#67Pancreatitis2 diseases
#68Gastroenteritis2 diseases
#69Malabsorption Symdromes7 diseases
#70Inflammatory Bowel Disease2 diseases
#71Diverticular Disease3 diseases
#72Anorectal Disorders10 diseases
#73Bezoars and Foreign Bodies1 diseases
#74Tumors of the GastroIntestinal Tract14 diseases
Endocrine & Metabolic
#6Pituitary Disorders1 diseases
#7Thyroid Disorders14 diseases
#8Adrenal Disorders9 diseases
#9Disorders of Water and Sodium Metabolism2 diseases
#10Disorders of Potassium Metabolism1 diseases
#11Disorders of Calcium Metabolism1 diseases
#12Disorders of Phosphate Metabolism1 diseases
#13Disorders of Magnesium Metabolism1 diseases
#14Disturbances of Acid-Base Metabolism2 diseases
#15Disorders of Carbohydrate Metabolism4 diseases
#16Most Common Porphyrias3 diseases
#17Least Common Porphyrias4 diseases
#18Hyperlipidemia4 diseases
#19Hypolipidemia3 diseases
#20Lipidoses7 diseases
#21Carcinoid Tumors1 diseases
#22AmyloidosisOpen condition page
#279Porphyrias3 diseases
#280Multiple Endocrine Neoplasia Syndromes1 diseases
#283Polyglandular Deficiency Syndromes2 diseases
Hepatic & Biliary
#23Liver Desease clinical Features1 diseases
#24Fatty Liver1 diseases
#25Alcoholic liver disease1 diseases
#26Liver disease-chronic1 diseases
#27Hepatitis3 diseases
#28Liver drug induced diseases2 diseases
#29Hepatic granulomasOpen condition page
#30Liver vascular lesions1 diseases
#31Liver tumours2 diseases
#32Gallbladder0 diseases
#33Extrahepatic biliary disease3 diseases
#470 diseases
#75Fibrosis and Cirrhosis2 diseases
#76Vascular Disorders7 diseases
#77Liver Masses and Granulomas4 diseases
#78GallBladder and Bile Duct Disorders8 diseases
Musculoskeletal & Connective Tissue
#34Connective tissue disease20 diseases
#35Arthritis associated with spondylitis1 diseases
#36Osteoarthritis and neurogenic arthropathy2 diseases
#37Avascular necrosisOpen condition page
#38Infections of bones and joints1 diseases
#39Crystal-induced conditions3 diseases
#40tumours of bones and joints5 diseases
#41OsteoporosisOpen condition page
#42Nonarticular rheumatism6 diseases
#43Foot and ankle disorders23 diseases
#44Hand disorders13 diseases
#45sports injuries10 diseases
#46Pagets disease of the bone1 diseases
Pulmonary
#48Respiratory failure2 diseases
#49Adult respiratory distress syndrome0 diseases
#50Chronic obstructive airway disorders2 diseases
#51Acute bronchitis1 diseases
#52Bronchiectasis1 diseases
#53Atelectasis1 diseases
#54Pulmonary embolism1 diseases
#55Pneumonia17 diseases
#56Lung abscess1 diseases
#57Occupational lung diseases4 diseases
#58Hypersensitivity diseases of the lungs3 diseases
#59Goodpastures syndrome1 diseases
#60Idiopathic interstitial lung diseases4 diseases
#61Pulmonary alveolar proteinosis1 diseases
#62Pleural disorders5 diseases
#268Interstitial Lung Diseases12 diseases
#269SarcoidosisOpen condition page
#270Environmental Pulmonary Diseases6 diseases
#271Pulmonary Hypertension2 diseases
#272Diffuse Alveolar Hemorrhage and Pulmonary Renal Syndromes3 diseases
#273Mediastinal and Pleural Disorders7 diseases
#274Sleep Apnea2 diseases
#275Tumors of the Lungs3 diseases
#276Respiratory arrest0 diseases
#286Acute Lung Injury1 diseases
#287Acute Respiratory Distress Syndrome1 diseases
E.N.T Disorders
#64Inner Ear7 diseases
#92Middle Ear and Tympanic Membrane Disorders8 diseases
#93External Ear Disorders4 diseases
#94Oropharyngeal Disorders11 diseases
#95Nose and Paranasal Sinus Disorders4 diseases
#96Laryngeal Disorders6 diseases
#97Tumors of the Head and NEck6 diseases
#98Temporomandibular Disorders5 diseases
#99Hearing Loss1 diseases
#100Nasal Oral and Pharyngeal Symptoms4 diseases
#101Dental Disorders7 diseases
#102Dental Emergencies2 diseases
Dermatologic
#112Acne and Related Disorders3 diseases
#113Bullous Diseases6 diseases
#114Cornification Disorders3 diseases
#115Dermatitis7 diseases
#116Reactions to Sunlight2 diseases
#117Psoriasis and Scaling Diseases7 diseases
#118Hypersensitivity and Inflammatory Disorders7 diseases
#119Sweating Disorders3 diseases
#120Bacterial Skin Infections13 diseases
#121Fungal Skin Infections9 diseases
#122Parasitic Skin Infections4 diseases
#123Viral Skin Diseases2 diseases
#124Pigmentation Disorders2 diseases
#125Hair Disorders3 diseases
#126Nail Disorders2 diseases
#127Pressure Ulcers0 diseases
#128Benign Tumors14 diseases
#129Cancers of the Skin5 diseases
Hematology & Oncology
#130Anemias caused by deficient Erythropoiesis7 diseases
#131Anemias caused by Hemolysis13 diseases
#132Neutropenia and Lymphocytopenia2 diseases
#133Thrombocytopenia and Platelet Dysfunction5 diseases
#134Hemostasis0 diseases
#135Thrombotic Disorders8 diseases
#136Coagulation Disorders2 diseases
#137Bleeding due to Abnormal Blood Vessels4 diseases
#138Spleen Disorders3 diseases
#139Eosinophilic Disorders1 diseases
#140Histiocytic Syndromes1 diseases
#141Myeloproliferative Disorders5 diseases
#142Leukemias3 diseases
#143Lymphomas3 diseases
#144Plasma Cell Disorders3 diseases
#145Iron Overload4 diseases
#146Transfusion Medicine0 diseases
#147Tumor Immunology0 diseases
#277Shock1 diseases
#278Sepsis2 diseases
#288Paraneoplastic Syndromes7 diseases
Infectious Diseases
#150Gram-Positive Cocci1 diseases
#151Gram-Positive Bacilli5 diseases
#152Gram-Negative Bacilli19 diseases
#153Spirochetes7 diseases
#154Neisseriaceae3 diseases
#155Chlamydia and Mycoplasmas1 diseases
#156Rickettsiae and Related Organisms9 diseases
#157Anaerobic Bacteria8 diseases
#158Mycobacteria3 diseases
#159Fungi10 diseases
#160Intestinal Protozoa6 diseases
#161Extraintestinal Protozoa9 diseases
#162Viruses0 diseases
#163Respiratory Viruses7 diseases
#164Herpesviruses6 diseases
#165Enteroviruses4 diseases
#166Other Viruses7 diseases
#167Sexually Transmitted Diseases11 diseases
#168Nematodes14 diseases
#169Trematodes7 diseases
#170Cestodes8 diseases
#281Arbovirus9 diseases
#282Human Immmunodeficiency Virus1 diseases
Psychiatric
#171Anxiety Disorders6 diseases
#172Dissociative Disorders4 diseases
#173Drug Dependence5 diseases
#174Eating Disorders3 diseases
#175Mood Disorders3 diseases
#176Personality Disorders1 diseases
#177Schizophrenia6 diseases
#178Sexual Disorders6 diseases
#179Suicidal Behavior1 diseases
#284Somatoform and Factitious Disorders5 diseases
#516Paraphilias1 diseases
Neurologic
#180Autonomic Nervous Sytem3 diseases
#181Pain2 diseases
#182Stroke4 diseases
#183Stupor and Coma2 diseases
#184Delirium and Dementia6 diseases
#185Seizure Disorders0 diseases
#186Sleep and Wakefulness Disorders7 diseases
#187Headache5 diseases
#188Brain Infections8 diseases
#189Meningitis4 diseases
#190Neuro-Opthalmologic and Cranial Nerve Disorders9 diseases
#191Craniocervical Junction Abnormalities0 diseases
#192Movement and Cerebellar Disorders9 diseases
#193Demyelinating Disorders1 diseases
#194Peripheral Nervous System Disorders8 diseases
#195Spinal Cord Disorders9 diseases
#196Intracranial and Spinal Tumors4 diseases
#285Dysfunction of the Cerebral Lobes4 diseases
Genitourinary
#63Lung tumours1 diseases
#197Male Reproductive Endocrinology3 diseases
#198Voiding Disorders4 diseases
#199Obstructive Uropathy1 diseases
#200Urinary Calculi1 diseases
#201Urinary Tract Infections3 diseases
#202Cystic Kidney Disease4 diseases
#203Renal Failure2 diseases
#204Renal Replacement Therapy0 diseases
#205Glomerular Diseases14 diseases
#206Tubulointerstitial Diseases4 diseases
#207Abnormal Renal Transport Syndromes5 diseases
#208Renovascular Disorders8 diseases
#209Penile and Scrotal Disorders10 diseases
#210Prostate Disease3 diseases
#211Genitourinary Cancer6 diseases
Gynecology & Obstetrics
#212Female Reproductive Endocrinology0 diseases
#213Menstrual Abnormalities5 diseases
#214Menopause1 diseases
#215Vaginitis and Pelvic Inflammatory Disease5 diseases
#216Endometriosis1 diseases
#217Uterine Fibroids1 diseases
#218Benign Gynecologic Lesions9 diseases
#219Pelvic Relaxation Syndromes3 diseases
#220Sexual Dysfunction in Women0 diseases
#221Breast Disorders4 diseases
#222Gynecologic Tumors8 diseases
#223Infertility5 diseases
#224Postpartum Care3 diseases
#289Abnormalities of Pregnancy17 diseases
#291Abnormalities and Complications of Labor and Delivery10 diseases
Cardiovascular
#79Arterial Hypertension2 diseases
#80Arteriosclerosis1 diseases
#81Coronary Artery Disease4 diseases
#82Heart Failure and Cardiomyopathies6 diseases
#83Arrhythmias and Conduction10 diseases
#84Valvular9 diseases
#85Endocarditis2 diseases
#86Pericarditis1 diseases
#87Diseases of the Aorta and its Branches5 diseases
#88Peripheral Arterial6 diseases
#89Peripheral Venous and Lymphatic6 diseases
#90Sports and the Heart1 diseases
#91Cardiac Tumors1 diseases
Injuries
#225Fractures Dislocations and Sprains2 diseases
#226Traumatic Brain Injury0 diseases
#227Spinal Trauma0 diseases
#228Facial Trauma0 diseases
#229Eye Injuries4 diseases
#230Genitourinary Tract Trauma4 diseases
#231BurnsOpen condition page
#232Electrical and Lightning Injuries1 diseases
#233Radiation Injury0 diseases
#234Heat Illness3 diseases
#235Cold Injury2 diseases
#236Altitude Sickness1 diseases
#237Motion Sickness1 diseases
#238Exercise and Sports Injury7 diseases
#239Bites and Stings4 diseases
#290Injury during Driving or Work in Compressed Air3 diseases
Pediatrics
#241Cystic Fibrosis1 diseases
#242Perinatal Hematologic Disorders2 diseases
#243Gastrointestinal Disorders in Neonates and Infants5 diseases
#244Dehydration and Fluid Therapy1 diseases
#245Respiratory Disorders in Neonates,Infants and young children8 diseases
#246Infections in Neonates12 diseases
#247Infections in Infants and Children3 diseases
#248Rheumatic Fever in Children1 diseases
#249Endocrine and Metabolic Disorders in Children5 diseases
#250Neurologic Disorders in Children4 diseases
#251Bone and Connective tissue Disorders in Children14 diseases
#252Pediatric Cancers3 diseases
#253Miscellaneous Disorders in Infants and Children5 diseases
#254Congenital Cardiovascular Anomalies11 diseases
#255Congenital Craniofacial and Musculoskeletal Abnormalities1 diseases
#256Congenital Gastrointestinal Anomalies12 diseases
#257Congenital Renal and Genitourinary Anomalies1 diseases
#258Renal Transport Abnormalities4 diseases
#259Congenital Neurologic Anomalies1 diseases
#260Eye defects and conditions in children4 diseases
#261Chromosomal Anomalies5 diseases
#262Inherited Muscular Disorders1 diseases
#263Inherited disorders of metabolism7 diseases
#264Hereditary Periodic Fever Syndromes2 diseases
#265Learning and Developmental Disorders3 diseases
#266Mental Disorders in children and adolescents10 diseases
#267Perinatal Problems5 diseases