Conditions
Look up a condition to read about its symptoms, causes and treatment, and find doctors who treat it.
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Common conditions
All conditions (1204)
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A
- Abdominal aortic aneurysm
- Abdominal pain
- Abnormal dental arch relationship
- Abnormal fetal position
- Abnormal nose shape
- Abnormal uterine and vaginal bleeding
- Abnormally large breasts
- Accessory toe
- Achalasia
- Achilles tendinitis
- Achondroplasia
- Acromegaly
- Actinomycosis
- Acute Achilles tendon rupture
- Acute appendicitis
- Acute cholecystitis
- Acute coronary syndrome
- Acute cystitis
- Acute gastroenteritis
- Acute hepatitis A
- Acute hepatitis B
- Acute hepatitis C
- Acute interstitial nephritis
- Acute kidney failure
- Acute lymphoblastic leukemia
- Acute myeloid leukemia
- Acute myocardial infarction
- Acute otitis media
- Acute pancreatitis
- Acute pulpitis
- Acute pyelonephritis
- Acute rheumatic fever
- Acute vaginitis
- Acute viral hepatitis
- Adenomyosis
- Adjustment disorder
- Adrenal cancer
- Adrenal insufficiency
- Adrenal tumor
- Adrenoleukodystrophy
- Adult attention-deficit/hyperactivity disorder
- Adult-onset Still’s disease
- Advanced heart failure
- Advanced stomach cancer
- Age-related hearing loss
- Age-related kyphosis
- Aging
- Agoraphobia
- AIDS
- Air-conditioning sickness
- Airway obstruction by a foreign body
- Alcohol dependence
- Alcohol-related dementia
- Alcoholic liver disease
- Allergic conjunctivitis
- Allergic rhinitis
- Alport syndrome
- Alzheimer's disease
- Ambiguous genitalia
- Amblyopia
- Amebic dysentery
- Amebic liver abscess
- Amenorrhea
- Amnesia
- Amniotic fluid embolism
- Amyloidosis
- Amyotrophic lateral sclerosis
- Anal cancer
- Anal fissure
- Anal fistula
- Anal itching
- Anal prolapse
- Anaphylaxis
- Androgen insensitivity syndrome
- Androgen insensitivity syndrome (AIS)
- Angelman syndrome
- Angina
- Angioedema
- Ankylosing spondylitis
- Anodontia
- Anorexia nervosa
- Anthrax
- Antiphospholipid antibody syndrome
- Antisocial personality disorder
- Anxiety disorder
- Aortic aneurysm
- Aortic dissection
- Aortic stenosis
- Aortic valve insufficiency
- Aortic valve stenosis
- Apert syndrome
- Aphasia
- Aplastic anemia
- Appendiceal cancer
- Appendicitis
- ARC syndrome
- Arterial embolism and thrombosis
- Arteriovenous fistula dysfunction
- Arthritis
- Ascites
- Asperger syndrome
- Aspergillosis
- Asthma
- Astigmatism
- Asymptomatic bacteriuria
- Asymptomatic HIV infection
- Ataxia-telangiectasia
- Atherosclerosis
- Athlete's foot
- Atopic dermatitis
- Atrial fibrillation
- Atrial flutter
- Atrial septal defect
- Atrioventricular septal defect
- Atrophic vaginitis
- Attention-deficit/hyperactivity disorder
- Atypical parkinsonism
- Autism spectrum disorder
- Autoimmune disease
- Autoimmune hemolytic disease
- Autoimmune hepatitis
- Autoimmune thyroiditis
- Avascular necrosis of the femoral head
- Azoospermia
B
- Bacterial dysentery
- Bacterial meningitis
- Baker's cyst
- Balanoposthitis
- Banti syndrome
- Barrett’s esophagus
- Bartholin gland abscess
- Basal cell carcinoma
- Becker muscular dystrophy
- Beckwith-Wiedemann syndrome
- Bedwetting
- Bee sting
- Behçet's disease
- Benign and malignant tumors of the pituitary gland
- Benign colon tumor
- Benign liver tumor
- Benign mediastinal tumor
- Benign ovarian tumor
- Benign paroxysmal positional vertigo
- Benign prostatic hyperplasia
- Benign rectal tumor
- Benign skin tumor
- Beriberi
- Best vitelliform macular dystrophy
- Bile duct cancer
- Bipolar disorder
- Bladder cancer
- Bladder prolapse
- Bladder–intestinal fistula
- Bladder–vaginal fistula
- Bleeding in the abdominal cavity
- Blepharitis
- Blocked tear duct
- Blood coagulation disorders
- Blood in semen
- Blood in the urine
- Body fat imbalance
- Bone tumor
- Borderline personality disorder
- Botulism
- Bovine spongiform encephalopathy
- Bowlegs
- Bradycardia
- Brain abscess
- Brain death
- Brain hemorrhage
- Brain tumor
- Branchial cyst
- Breast abscess
- Breast cancer
- Breast carcinoma in situ
- Breast fibroadenoma
- Breast mass
- Breast microcalcifications
- Breast pain
- Bronchopulmonary dysplasia
- Brucellosis
- Brugada syndrome
- Budd–Chiari syndrome
- Bulimia nervosa
- Bunion
- Bunionette
- Burkitt lymphoma
- Burns
- Bursitis
C
- Calcific tendinitis
- Campylobacter infection
- Cancer of the ampulla of Vater
- Cancer of unknown primary site
- Candidal stomatitis
- Carbon monoxide poisoning
- Carcinoid syndrome
- Carcinoma in situ of the cervix
- Cardiac arrhythmia
- Cardiac tamponade
- Cardiac tumor
- Carnitine palmitoyltransferase II deficiency
- Caroli disease
- Carotid artery stenosis
- Carpal tunnel syndrome
- Castleman disease
- Cataract
- Cavus foot
- Celiac disease
- Central serous chorioretinopathy
- Cephalopelvic disproportion
- Cerebral aneurysm
- Cerebral arteriovenous malformation
- Cerebral artery occlusion
- Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
- Cerebral infarction
- Cerebral palsy
- Cervical cancer
- Cervical disc herniation
- Cervical dysplasia
- Cervical insufficiency
- Cervical lymphadenitis
- Cervicitis
- Chagas disease
- Chancroid
- CHARGE syndrome
- Cheilitis
- Chest pain
- Chickenpox
- Chikungunya fever
- Child abuse
- Choledochal cyst
- Cholera
- Cholesteatoma
- Chondromalacia
- Chorioamnionitis
- Choriocarcinoma
- Choroidal melanoma
- Chronic cholecystitis
- Chronic fatigue syndrome
- Chronic gastritis
- Chronic hepatitis B
- Chronic hepatitis C
- Chronic kidney failure
- Chronic lymphocytic leukemia
- Chronic myeloid leukemia
- Chronic otitis media
- Chronic pancreatitis
- Chronic periodontitis
- Chronic prostatitis
- Chronic pyelonephritis
- Chronic rhinitis
- Chronic sinusitis
- Citrin deficiency
- Citrullinemia
- Claustrophobia
- Clavicle fracture
- Cleft lip
- Cleft palate
- Clonorchiasis
- Cluster headache syndrome
- Coarctation of the aorta
- Cold hands and feet
- Cold sores
- Colitis
- Colon cancer
- Colon polyp
- Color blindness
- Coma
- Common bile duct stone
- Community-acquired pneumonia
- Compartment syndrome
- Complete spinal cord injury
- Complex regional pain syndrome
- Conduction disorders
- Congenital absence, blockage, or narrowing of the intestine
- Congenital adrenal hyperplasia
- Congenital biliary atresia
- Congenital eye malformations
- Congenital flat feet
- Congenital hand anomaly
- Congenital heart disease
- Congenital hydronephrosis
- Congenital hypothyroidism
- Congenital malformation
- Congenital torticollis
- Conjunctivitis
- Constipation
- Continuing pregnancy after miscarriage
- Corneal opacity and scarring
- Corneal ulcer
- Cornelia de Lange syndrome
- Corns and calluses
- Corrected transposition of the great arteries
- COVID-19
- Craniofacial disharmony
- Craniosynostosis
- Creutzfeldt-Jakob disease
- Cri du Chat syndrome
- Crohn's disease
- Crouzon syndrome
- Cruciate ligament injury
- Crush injury
- Cryoglobulinemia
- Cryptococcosis
- Cryptotia
- Cushing syndrome
- Cystic hygroma
- Cystic kidney disease
- Cytomegalovirus disease
D
- Dandy-Walker syndrome
- Decompression sickness
- Deep vein thrombosis
- Degenerative spinal disorder
- Delirium
- Delusional disorder
- Dementia
- Dengue fever
- Depression in children and adolescents
- Depressive disorder
- Dermatitis
- Dermatofibrosarcoma
- Dermatomyositis
- Developmental disability
- Developmental dysplasia of the hip
- Developmental odontogenic cyst
- Deviated nasal septum
- Diabetes
- Diabetes insipidus
- Diabetic foot disease
- Diabetic ketoacidosis
- Diabetic peripheral neuropathy
- Diabetic retinopathy
- Diaper rash
- Diaphragmatic hernia
- Difficult labor
- Diffuse interstitial lung disease
- Dilated cardiomyopathy
- Diphtheria
- Discoid meniscus
- Disorders of the ovary and fallopian tube
- Disruptive, impulse-control and conduct disorders
- Disseminated intravascular coagulation
- Dissociative disorder
- Distal radius and ulna fracture
- Diverticular disease
- Double vision
- Double-inlet ventricle
- Double-outlet right ventricle
- Down syndrome
- Drooping eyelid
- Drowning
- Drug allergy
- Dry eye syndrome
- Dry socket
- Duchenne muscular dystrophy
- Dumping syndrome
- Duodenal ulcer
- Duodenitis
- Dupuytren contracture
- Dyslexia
- Dyslipidemia
- Dysthymia
- Dystonia
E
- Ear discharge
- Early menopause
- Early stomach cancer
- Eating disorder
- Ebola hemorrhagic fever
- Ebstein anomaly
- Eclampsia
- Ectopic pancreas
- Ectopic pregnancy
- Edwards syndrome
- Ehlers-Danlos syndrome
- Elevated PSA
- Ellis-van Creveld syndrome
- Empyema
- Encephalitis
- Enchondroma
- End-stage kidney disease
- Endocarditis
- Endometrial cancer
- Endometrial hyperplasia
- Endometrial polyp
- Endometriosis
- Enlarged male breasts
- Enterobacter sakazakii infection
- Enterohemorrhagic Escherichia coli infection
- Entropion
- Eosinophilia
- Epidemic typhus
- Epididymitis
- Epiglottitis
- Epilepsy
- Epiretinal membrane
- Erysipelas
- Escherichia coli (E. coli) infection
- Esophageal cancer
- Esophageal leiomyoma
- Esophageal varices
- Esophagitis
- Ewing sarcoma
- Excessive amniotic fluid
- Excessive body odor
- Exfoliative dermatitis
- Eye cancer
- Eye floaters
- Eyelid disorders
F
- Fabry disease
- Facial aging
- Facial asymmetry
- Facial bone fracture
- Facial palsy
- False labor
- Familial hemophagocytic lymphohistiocytosis
- Fanconi pancytopenia syndrome
- Fatty liver
- Fecal incontinence
- Female infertility
- Femur fracture
- Fetal alcohol syndrome
- Fever of unknown origin
- Fibroma
- Fibromyalgia
- Fifth disease
- Follicular thyroid cancer
- Folliculitis
- Food allergy
- Food poisoning
- Foreign body in the digestive tract
- Foreign body in the esophagus
- Foreign body in the vulva and vagina
- Fournier’s gangrene
- Fragile X syndrome
- Frailty
- Friedreich ataxia
- Frozen shoulder
- Fulminant hepatitis
- Functional gastrointestinal disorder
- Fungal corneal ulcer
- Fungal infection
G
- Gait and mobility disorders
- Galactosemia
- Gallbladder adenomyomatosis
- Gallbladder cancer
- Gallbladder polyp
- Gallstones
- Gamekeeper's thumb
- Ganglion cyst
- Ganglioneuroma
- Gas gangrene
- Gastric adenoma
- Gastric carcinoid tumor
- Gastric MALT lymphoma
- Gastric polyp
- Gastric varices
- Gastritis
- Gastroesophageal reflux disease
- Gastrointestinal bleeding
- Gastrointestinal stromal tumor
- Gastrointestinal tuberculosis
- Gaucher disease
- Genital warts
- Gerstmann syndrome
- Gestational diabetes
- Gestational hypertension
- Gingivitis
- Glaucoma
- Glioblastoma
- Glomerulonephritis
- Glossopharyngeal neuralgia
- Glycogen storage disease
- Goldenhar syndrome
- Golfer’s elbow
- Gonadal and germ cell neoplasm
- Gonorrhea
- Gout
- Gouty arthritis
- Graft-versus-host disease
- Granuloma inguinale
- Granulosa cell tumor
- Growth hormone deficiency
- Guillain-Barré syndrome
H
- Hamartoma
- Hammer toe
- Hand eczema
- Hand trauma
- Hand, foot and mouth disease
- Haw River syndrome
- Head and neck cancer
- Headache
- Hearing loss
- Heart failure with preserved ejection fraction
- Heart failure with reduced ejection fraction
- Heat exhaustion
- Heat stroke
- Heavy menstrual bleeding
- Helicobacter pylori infection
- Hemochromatosis
- Hemolytic anemia
- Hemolytic uremic syndrome
- Hemophilia
- Hemorrhagic conjunctivitis
- Hemorrhagic fever with renal syndrome
- Hemorrhoids
- Henoch-Schönlein purpura
- Hepatic encephalopathy
- Hepatic hemangioma
- Hepatitis
- Hepatorenal syndrome
- Hereditary spherocytosis
- Herpes simplex
- Herpes simplex encephalitis
- Herpes virus infection
- Heterotopic ossification
- Hidradenitis suppurativa
- High blood calcium
- High blood pressure
- High cholesterol
- High magnesium levels
- High potassium levels
- High sodium levels
- Hilar cholangiocarcinoma
- Hip osteoarthritis
- Hirschsprung disease
- Histoplasmosis
- Histrionic personality disorder
- Hodgkin lymphoma
- Holt-Oram syndrome
- Homocystinuria
- Hospital-acquired pneumonia
- Human infection with avian influenza
- Human papillomavirus infection
- Humerus fracture
- Hunter syndrome
- Huntington's disease
- Hurler syndrome
- Hydrocele
- Hydrocephalus
- Hydronephrosis
- Hydrosalpinx
- Hypertrophic cardiomyopathy
- Hyperventilation syndrome
- Hypochondriasis
- Hypochondroplasia
- Hypoglycemia
- Hypophosphatasia
- Hypoplastic left heart syndrome
- Hypospadias
- Hypothermia
I
- IgA nephropathy
- Immune thrombocytopenia
- Immunodeficiency
- Impacted wisdom tooth
- Imperforate anus
- Incisional hernia
- Indigestion
- Infant colic
- Infantile eczema
- Infantile hypertrophic pyloric stenosis
- Infectious mononucleosis
- Infective myositis
- Influenza
- Infrequent periods
- Ingrown nail
- Inguinal hernia
- Insomnia
- Intellectual disability
- Interdigital neuroma
- Internal derangement of the knee
- Internet addiction
- Interrupted aortic arch
- Interstitial cystitis
- Intertrigo
- Intestinal adhesions
- Intestinal obstruction
- Intraductal papilloma of the breast
- Intrahepatic bile duct stones
- Intrauterine growth restriction
- Intussusception
- Inverted nipple
- Iritis
- Irlen syndrome
- Iron deficiency anemia
- Irritable bowel syndrome
- Ischemic heart disease
J
K
- Kabuki syndrome
- Kallmann syndrome
- Kaposi sarcoma
- Kawasaki disease
- Keloid
- Keratitis
- Keratoconus
- Kernicterus
- Kidney cancer
- Kidney dysplasia
- Kidney failure
- Kidney stones
- Kidney tumor
- Kikuchi disease
- Kleptomania
- Klinefelter syndrome
- Klippel-Trenaunay-Weber syndrome
- Knee osteoarthritis
- Kniest dysplasia
- Knock knees
- Korean name
L
- Labral tear
- Labyrinthitis
- Lacquer tree dermatitis
- Lactose intolerance
- Langerhans cell histiocytosis
- Laron syndrome
- Laryngeal cancer
- Laryngopharyngitis
- Lassa fever
- Lead poisoning
- Leber hereditary optic neuropathy
- Legionnaires’ disease
- Leigh syndrome
- Lens dislocation
- Leprosy
- Leptospirosis
- Leriche syndrome
- Lesch-Nyhan syndrome
- Leukemia
- Lipoma
- Listeria infection
- Liver abscess
- Liver cancer
- Liver cirrhosis
- Liver metastasis
- Liver transplant status
- Locked-in syndrome
- Low amniotic fluid
- Low back pain
- Low blood pressure
- Low calcium levels
- Low magnesium levels
- Low potassium levels
- Low sex hormone levels
- Low sodium levels
- Low sperm count
- Lowe syndrome
- Ludwig's angina
- Lumbar disc herniation
- Lumbar spinal stenosis
- Lumbar spondylolisthesis
- Lung cancer
- Lung metastasis
- Lyme disease
- Lymphadenitis
- Lymphedema
- Lymphoma
- Lynch syndrome
M
- Macular degeneration
- Macular hole
- Malabsorption syndrome
- Malaria
- Male infertility
- Male menopause
- Malignant glioma
- Malignant hyperthermia
- Malignant mediastinal tumor
- Malignant melanoma
- Malignant mesothelioma
- Malignant pleural effusion
- Mallory-Weiss syndrome
- Malunion or nonunion of a fracture
- Mammary duct ectasia
- Maple syrup urine disease
- Marburg fever
- Marfan syndrome
- Maroteaux-Lamy syndrome
- Mastitis
- Measles
- Meckel’s diverticulum
- Medium-chain acyl-CoA dehydrogenase deficiency
- Medullary thyroid cancer
- Megaloblastic anemia
- Melanocytic nevus
- Melioidosis
- Meniere's disease
- Meningioma
- Meniscus disorder
- Meniscus tear
- Menkes disease
- Menopause
- Menopause and related conditions
- MERRF syndrome
- Mesenteric artery thrombosis
- Mesenteric vein thrombosis
- Metabolic acidosis
- Metabolic alkalosis
- Metabolic syndrome
- Metachromatic leukodystrophy
- Metastatic cancer
- Metastatic kidney cancer
- Methylmalonic acidemia
- Microangiopathic hemolytic anemia
- Microcytic anemia
- Microtia
- Middle East respiratory syndrome
- Migraine
- Mild cognitive impairment
- Milia
- Miliary tuberculosis
- Minimal change nephrotic syndrome
- Miscarriage
- Missed miscarriage
- Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS)
- Mitral valve insufficiency
- Mitral valve stenosis
- Molar pregnancy
- Monoclonal gammopathy of undetermined significance
- Monolid
- Morquio syndrome
- Motor neuron disease
- Mountain sickness
- Moyamoya disease
- Mucopolysaccharidoses
- Multiple lentigines syndrome (LEOPARD syndrome)
- Multiple myeloma
- Multiple pregnancy
- Multiple sclerosis
- Mumps
- Munchausen syndrome
- Murine typhus
- Myasthenia gravis
- Myelodysplastic syndromes
- Myelomeningocele
- Myelopathy
- Myeloproliferative neoplasm
- Myocarditis
- Myofascial pain syndrome
- Myopathy
- Myopia
- Myotonic dystrophy
- Myringitis
- Myxedema coma
N
- Narcolepsy
- Nasal polyp
- Nasopharyngeal tumor
- Nelson syndrome
- Neonatal cholestasis
- Neonatal necrotizing enterocolitis
- Neonatal respiratory distress syndrome
- Nephrotic syndrome
- Neuroblastoma
- Neurocardiogenic syncope
- Neurofibromatosis
- Neurogenic bladder
- Neuroma
- Neuromuscular bladder dysfunction
- Neutropenia
- Nevus
- Newborn asphyxia
- Newborn jaundice
- Newborn polycythemia
- Niemann-Pick disease
- Night blindness
- Nocardiosis
- Non-Hodgkin lymphoma
- Non-small cell lung cancer
- Nongonococcal urethritis
- Noninflammatory disorders of the uterus
- Noonan syndrome
- Normal full-term spontaneous delivery
- Norovirus gastroenteritis
- Nose deformity
- Nosebleed
- Nummular eczema
O
- Obesity
- Obsessive-compulsive disorder
- Occipital neuralgia
- Old myocardial infarction
- Omphalitis
- Oophoritis and salpingitis
- Optic neuritis
- Oral cancer
- Orbital fracture
- Orchitis
- Osgood-Schlatter disease
- Ossification of the posterior longitudinal ligament
- Osteoarthritis
- Osteogenesis imperfecta
- Osteomyelitis
- Osteonecrosis
- Osteopenia
- Osteoporosis
- Osteosarcoma
- OTC deficiency
- Other aneurysm
- Other cysts of the jaw
- Otitis media with effusion
- Outer ear infection
- Ovarian cancer
- Ovarian cyst
- Overactive bladder
- Overactive parathyroid glands
- Overactive pituitary gland
- Overactive thyroid
- Ovulation pain
P
- Paget disease of the breast
- Painful urination
- Palpitations
- Pancreatic cancer
- Pancreatic metastasis
- Pancreatitis
- Pancytopenia
- Panic disorder
- Papillary thyroid cancer
- Paraffinoma
- Parainfluenza infection
- Paranoid personality disorder
- Paraphilia
- Paraphimosis
- Parathyroid cancer
- Paratyphoid fever
- Parkinson's disease
- Paronychia
- Paroxysmal nocturnal hemoglobinuria
- Paroxysmal supraventricular tachycardia
- Patau syndrome
- Patella fracture
- Patellar tendinitis
- Patent ductus arteriosus
- Patent foramen ovale
- Pathological fracture
- Pectus excavatum
- Pelvic inflammatory disease
- Pemphigus
- Penile cancer
- Perianal abscess
- Periapical abscess with sinus tract
- Pericardial effusion
- Pericarditis
- Perineal tear
- Periodontal abscess
- Peripheral artery disease
- Peritonitis
- Persistent truncus arteriosus
- Peyronie’s disease
- Pfeiffer syndrome
- Phenylketonuria
- Pheochromocytoma
- Phimosis
- Phyllodes tumor of the breast
- Physical disability
- Pinworm infection
- Placenta accreta
- Placenta previa
- Placental abruption
- Plague
- Plantar fasciitis
- Platelet disorders
- Pleurisy
- Pneumocephalus
- Polio
- Pollen allergy
- Polyarteritis nodosa
- Polycystic ovary syndrome
- Polydactyly
- Polyneuropathy
- Pompe disease
- Porcelain gallbladder
- Porphyria
- Portal vein thrombosis
- Post-term infant
- Post-traumatic stress disorder
- Postherpetic neuralgia
- Postnasal drip
- Postpartum depression
- Postpartum hemorrhage
- Postpartum thyroiditis
- Prader-Willi syndrome
- Precocious puberty
- Preeclampsia
- Premature ejaculation
- Premature rupture of membranes
- Premenstrual syndrome
- Presbyopia
- Pressure sore
- Preterm birth
- Preterm labor
- Priapism
- Primary biliary cirrhosis
- Primary central nervous system lymphoma
- Primary menstrual cramps
- Progeria
- Progressive supranuclear palsy
- Prominent ears
- Prominent jaw angle
- Propionic acidemia
- Prosopagnosia
- Prostate cancer
- Protozoal diseases
- Protruding mouth
- Pseudomembranous colitis
- Pseudomonas infection
- Pseudomyopia
- Pseudomyxoma peritonei
- Psoas abscess
- Psoriasis
- Pterygium
- Pubic lice
- Puerperal fever
- Pulmonary atresia with intact ventricular septum
- Pulmonary hypertension
- Pulmonary thromboembolism
- Pulmonary tuberculosis
- Pure red cell aplasia
- Purulent endophthalmitis
- Pyogenic liver abscess
- Pyromania
Q
R
- Rabies
- Radicular cyst
- Radiculopathy
- Raynaud's disease
- Reactive attachment disorder
- Rectal cancer
- Rectal carcinoid tumor
- Recurrent anterior shoulder dislocation
- Recurrent hernia
- Recurrent miscarriage
- Renal artery stenosis
- Renal pelvis cancer
- Respiratory acidosis
- Respiratory alkalosis
- Respiratory syncytial virus infection
- Restless legs syndrome
- Retinal detachment
- Retinal hemorrhage
- Retinal tear
- Retinal vein occlusion
- Retinitis pigmentosa
- Retinoblastoma
- Retinopathy of prematurity
- Rett syndrome
- Reye syndrome
- Rh-incompatible pregnancy
- Rhabdomyolysis
- Rhabdomyosarcoma
- Rheumatoid arthritis
- Rickets
- Right heart failure
- ROHHAD syndrome
- Roseola
- Rotator cuff syndrome
- Rubella (German measles)
- Rubinstein-Taybi syndrome
- Ruptured sinus of Valsalva aneurysm
- Russell-Silver syndrome
S
- Sacral fracture
- Salivary gland cancer
- Salivary gland inflammation
- Salivary gland stones
- Sanfilippo syndrome
- Sarcoma
- Sarcopenia
- Scalp ringworm
- Scar
- Scarlet fever
- Schizoaffective disorder
- Schizophrenia
- Schwannoma
- Sciatica
- Sclerosing cholangitis
- Scoliosis
- Scrub typhus
- Scurvy
- Secondary parkinsonism
- Seizure
- Seizures in newborns
- Sensorineural hearing loss
- Separation anxiety disorder
- Sepsis
- Septic arthritis
- Severe acute respiratory syndrome
- Severe fever with thrombocytopenia syndrome
- Sexual dysfunction
- Sexually transmitted disease
- Shingles
- Short bowel syndrome
- Short stature
- Sick building syndrome
- Sick sinus syndrome
- Single umbilical artery
- Single ventricle
- Sinonasal tumor
- Sinusitis
- Skin abscess
- Skin cancer
- Skull fracture
- Sleep apnea
- Sleep disorder
- Sleepwalking
- Sly syndrome
- Small bowel cancer
- Small breasts
- Small cell lung cancer
- Smell and taste disorders
- Smith-Magenis syndrome
- Snow blindness
- Social anxiety disorder
- Soft tissue metastasis
- Soft tissue sarcoma
- Somatic symptom disorder
- Sotos syndrome
- Sparganosis
- Sphingolipidosis
- Spina bifida occulta
- Spinal cord tumor
- Spinal disorder
- Spinal muscular atrophy
- Spinal tumor
- Spinobulbar muscular atrophy
- Spinocerebellar ataxia
- Spleen cancer
- Spondylolysis
- Spontaneous intracranial hemorrhage
- Sprain
- Spring fatigue
- Staphylococcal infection
- Stem cell transplantation
- Stevens–Johnson syndrome
- Stickler syndrome
- Stomach cancer
- Stomach cramps
- Stomach ulcer
- Strabismus
- Stress fracture
- Stress urinary incontinence
- Stroke
- Sturge-Weber syndrome
- Stuttering
- Stye
- Subarachnoid hemorrhage
- Sudden infant death syndrome
- Superior vena cava syndrome
- Swine flu
- Syphilis
- Syringomyelia
- Systemic sclerosis
T
- Takayasu arteritis
- Takotsubo cardiomyopathy
- Tay-Sachs disease
- Temporal arteritis
- Temporomandibular joint disorder
- Tendon injury
- Tennis elbow
- Tenosynovitis
- Tension-type headache
- Teratoma
- Testicular torsion
- Testicular tumors
- Tetanus
- Tetralogy of Fallot
- Text neck syndrome
- Thalassemia
- Thoracic aortic aneurysm
- Thoracic outlet syndrome
- Threatened miscarriage
- Thromboangiitis obliterans
- Thymus cancer
- Thyroglossal duct cyst
- Thyroid cancer
- Thyroid nodule
- Thyroiditis
- Thyrotoxicosis
- Tibia and fibula fractures
- Tic disorder
- Tinnitus
- Tissue reconstruction with a flap
- Tissue reconstruction with a skin graft
- Tongue pain
- Tongue-tie
- Tonsil and adenoid enlargement
- Tonsil cancer
- Tonsil stones
- Tonsillitis
- Tooth decay (cavities)
- Torsion of a testicular appendage
- Total anomalous pulmonary venous connection
- Tourette syndrome
- Toxic hepatitis
- Toxic shock syndrome
- Toxoplasmosis
- Transient ischemic attack
- Transient synovitis of the hip
- Transposition of the great arteries
- Transverse myelitis
- Transvestic fetishism
- Traumatic brain injury
- Traumatic dementia
- Traumatic eardrum perforation
- Traumatic spinal cord injury
- Traumatic spinal injury
- Traumatic subdural hemorrhage
- Travel precautions for overseas travel
- Treacher Collins syndrome
- Tremor
- Trichinellosis
- Trichomoniasis
- Trichotillomania
- Trigeminal neuralgia
- Trigger finger
- Triple X syndrome
- Truncus arteriosus
- Tuberculosis
- Tuberculous lymphadenitis
- Tuberculous meningitis
- Tuberculous osteomyelitis
- Tuberculous peritonitis
- Tuberous sclerosis
- Tularemia
- Turner syndrome
- Twin-to-twin transfusion syndrome
- Type 1 diabetes
- Type 2 diabetes
- Typhoid fever
U
- Ulcer of the anus and rectum
- Ulcerative colitis
- Umbilical hernia
- Underactive bladder
- Underactive parathyroid glands
- Underactive pituitary gland
- Underactive thyroid
- Underbite
- Undescended testicle
- Undifferentiated thyroid cancer
- Unstable angina
- Upper respiratory infection
- Uremia
- Ureteral stone
- Ureteral stricture
- Ureteropelvic junction obstruction
- Urethral stricture
- Urinary incontinence
- Urinary retention
- Urinary stones
- Urinary tract infection
- Uterine fibroids
- Uterine hypoplasia
- Uterine prolapse
- Uterine sarcoma
- Uveitis
V
- Vaginal cancer
- Vaginal yeast infection
- Valvular heart disease
- Vancomycin-resistant enterococcal (VRE) infection
- Vancomycin-resistant Staphylococcus aureus (VRSA) infection
- Varicocele
- Varicose veins
- Vascular dementia
- Vascular disorders of the intestine
- Vasculitis
- VDT syndrome
- Ventricular fibrillation
- Ventricular septal defect
- Ventricular tachycardia
- Vertebral osteomyelitis
- Vertebrobasilar artery syndrome
- Vertigo
- Vesicoureteral reflux
- Vestibular neuritis
- Vestibular schwannoma
- Vibrio vulnificus sepsis
- Viral enteritis
- Viral meningitis
- Vitreous hemorrhage
- Vocal cord and laryngeal nodules
- Vocal cord and laryngeal polyps
- Volvulus
- Vomiting
- Von Hippel-Lindau syndrome
- Von Willebrand disease
- Vulvar cancer