Patients & CaregiversHealthcare ProfessionalsWorldwide
HomeAbout MerckProductsNewsroomInvestor RelationsCareersResearchLicensingThe Merck Manuals
THE MERCK MANUAL MEDICAL LIBRARY: The Merck Manual of Medical Information--Home Edition
Tips for better results
ABCDEFGHI
JKLMNOPQR
STUVWXYZ
Sections
Resources
Index
cacbcccdcechcickclcmcocpcrcsctcucy
Type in the first few letters of a word to get there faster:
Go

Co

Coal workers' pneumoconiosis

Who Is at Risk for Occupational Lung Diseases?Sidebar
Black Lung

Coarctation of aorta

Heart Defects: Coarctation of the Aorta

Cobalamin (vitamin B12)

VitaminsTables
Vitamin B12

  • deficiency of

  • Vitamin B12: Vitamin B12 Deficiency
    Vitamin Deficiency Anemia

  • in homocystinuria

  • Amino Acid Metabolism: Homocystinuria

  • supplementation with

  • Vitamin Deficiency Anemia: Treatment

    Cocaine

    Cocaine

  • adolescent use of

  • Drug and Substance Use and Abuse

  • during pregnancy

  • Risk Factors That Develop During Pregnancy: Drugs

    Coccal infection

    see also specific infections
    Shapes of BacteriaFigures
    Pneumococcal Infections
    Staphylococcal Infections

    Coccidioidomycosis

    Coccidioidomycosis

  • pneumonia and

  • Fungal Pneumonia: Coccidioidomycosis

    Coccydynia

    Levator Syndrome

    Cochlea

    A Look Inside the EarFigures
    Ears: Inner Ear

    Cochlear implant

    Hearing Loss and Deafness: Cochlear Implants
    Cochlear Implant: Aid for the Severely to Profoundly DeafFigures
    Hearing Deficits: Treatment

    Codeine

    Opioid AnalgesicsTables

  • in cough remedies

  • Symptoms: Antitussive Therapy
    Nonprescription Cold RemediesTables

  • in diarrhea

  • Drugs Used to Treat DiarrheaTables

    Coelenterate sting

    Marine Animal Stings and Bites

    Coenurosis

    Parasitic Infections

    Coffee worker's lung

    What Causes Hypersensitivity Pneumonitis? Tables

    Cognitive-behavior therapy

    Treatment of Mental Illness: Psychotherapy

  • in anxiety

  • Generalized Anxiety Disorder: Treatment

  • in bulimia

  • Bulimia Nervosa: Diagnosis and Treatment

    Cognitive impairment

  • in Alzheimer's disease

  • Dementia: Symptoms

  • in delirium

  • Delirium: Symptoms

  • in dementia

  • Dementia: Symptoms

  • in schizophrenia

  • Schizophrenia: Symptoms

    Cohort study

    Information Sources: Research Studies

    Coitus interruptus

    Contraception: Withdrawal Before Ejaculation

    Coke

    see Cocaine

    Colchicine

  • in amyloidosis

  • Amyloidosis: Prognosis and Treatment

  • in familial Mediterranean fever

  • Familial Mediterranean Fever: Prognosis, Prevention, and Treatment

  • in gout

  • Gout: Relieving the Acute Attack
    Drugs Used to Treat GoutTables

  • in pseudogout

  • Pseudogout: Prognosis and Treatment

    Cold antibody hemolytic anemia

    Autoimmune Hemolytic Anemia

    Cold, common

    Common Cold
    Rhinitis: Viral Rhinitis

  • in children

  • Respiratory Tract Infections

  • remedies for

  • Common Cold: Treatment
    Nonprescription Cold RemediesTables

    Cold environment

  • allergy to

  • Physical Allergy

  • injury from

  • Cold Injuries

  • keeping warm in

  • Cold Injuries

    Cold sores

    Herpes Simplex Virus Infections: Oral Infection

    Cold therapy (cryotherapy)

    Treatment of Pain and Inflammation: Cold Therapy (Cryotherapy)

  • after dental treatment

  • After Dental Treatment

  • in ankle sprain

  • Ankle Sprain: Diagnosis and Treatment

  • in cervical cancer

  • Cervical Cancer: Prognosis and Treatment

  • in heat stroke

  • Heatstroke: Treatment

  • in sports injuries

  • Sports Injuries: Treatment

  • in wart removal

  • Warts: Treatment

    Colesevelam

    Lipid-Lowering DrugsTables

    Colestipol

    Lipid-Lowering DrugsTables

    Colic

  • biliary (gallbladder pain)

  • Gallbladder and Biliary Tract
    Gallstones: Symptoms
    Cholecystitis: Symptoms

  • in infants

  • Fussiness, Excessive Crying, and Colic

  • renal

  • Symptoms: Causes
    Hydronephrosis: Symptoms
    Stones in the Urinary Tract: Symptoms

    Colistin

    AntibioticsTables

    Colitis

    see also Crohn's disease

  • antibiotic-associated

  • Microorganisms That Cause GastroenteritisTables
    Clostridium difficile-Induced Colitis
    Antibiotics: Side Effects and Allergies

  • collagenous

  • Collagenous Colitis and Lymphocytic Colitis

  • diversion

  • Diversion Colitis

  • hemmorhagic

  • Hemorrhagic Colitis

  • ischemic

  • Ischemic Colitis

  • lymphocytic

  • Collagenous Colitis and Lymphocytic Colitis

  • toxic

  • Ulcerative Colitis: Complications
    Ulcerative Colitis: Surgery

  • ulcerative

  • Ulcerative Colitis

    Collagenous colitis

    Collagenous Colitis and Lymphocytic Colitis

    Colles' fracture

    Osteoporosis: Symptoms
    Arm

    Colon

    see Large intestine

    Colonic enema

    Symptoms: Enemas

    Colonic inertia

    Symptoms: Slowed Transit of Stool

    Colonoscopy

    Selected Screening Schedule for AdultsTables
    Diagnosis: Endoscopy
    Viewing the Digestive Tract With an EndoscopeFigures
    Colorectal Cancer: Screening Tests
    Common Medical Tests: Endoscopy
    Diagnostic Procedures Tables

  • in cancer screening

  • Cancer Screening Recommendations Tables

  • in Crohn's disease

  • Crohn's Disease: Diagnosis

  • in diverticulitis

  • Diverticulitis: Symptoms and Diagnosis

  • in intestinal polyps

  • Colorectal Polyps: Symptoms and Diagnosis

  • in small intestine cancer

  • Small Intestine Cancer: Symptoms and Diagnosis

  • in ulcerative colitis

  • Ulcerative Colitis: Complications

  • virtual

  • Colorectal Cancer: Screening Tests

    Color blindness

    Inheritance of Single-Gene Disorders: Recessive Disorders
    Symptoms: Color Blindness
    What Causes Color Blindness?Sidebar

  • testing for

  • Diagnosis: Color Vision Testing

    Colorectal cancer

    Colorectal Cancer
    Staging Colon CancerFigures

  • screening for

  • Selected Screening Schedule for AdultsTables

  • ulcerative colitis and

  • Ulcerative Colitis: Complications

    Colostomy

    Understanding ColostomyFigures

  • in colorectal cancer

  • Colorectal Cancer: Prognosis and Treatment

  • diversion colitis after

  • Diversion Colitis

  • in diverticulitis

  • Diverticulitis: Treatment

  • in fecal incontinence

  • Symptoms: Treatment

  • in Hirschsprung disease

  • Digestive Tract Defects: Hirschsprung's Disease

  • travel with

  • Specific Medical Conditions and Travel: Other Conditions

    Colostrum

    Physical Changes: Breasts
    Feeding: Benefits of Breastfeeding

    Colposcopy

    Gynecologic Evaluation: Colposcopy

    Coma

    Stupor and Coma
    Some Causes of Stupor and Coma Tables

  • diabetic

  • Diabetes Mellitus (DM): Type 1
    Diabetes Mellitus (DM): Treatment

  • hepatic

  • Alcohol: Symptoms and Complications
    Hepatic Encephalopathy

  • irreversible

  • Medical Terms Related to Life-Sustaining TreatmentSidebar

  • myxedema

  • Hypothyroidism: Symptoms

    Common bile duct

    Digestive SystemFigures
    View of the Liver and GallbladderFigures

    Common cold

    see Cold, common

    Common hepatic duct

    Digestive SystemFigures
    Gallbladder and Biliary Tract
    View of the Liver and GallbladderFigures

    Common variable immunodeficiency

    Common Variable Immunodeficiency

    Communicable diseases

    see Infection

    Communication

  • with dying person

  • Communicating With a Dying PersonSidebar

  • with health care practitioners

  • Confidentiality and HIPAA
    Adherence to Drug Treatment: Improving Adherence

  • in medical decision-making

  • Medical Decision Making

  • with health care professionals

  • Choices to Make Before Death

  • parent-child

  • Talking With Children About Difficult TopicsSidebar
    What Is Bullying?Sidebar

    Compartment syndrome

    Fractures: Compartment Syndrome
    Fractures: Treatment of Complications

  • in electrical injury

  • Electrical Injuries: Symptoms

    Competency

    Legal Terms Related to Health CareSidebar
    Capacity to Make Health Care Decisions

    Complementary medicine

    Complementary and Alternative Medicine (CAM)

    Complement system

    Understanding the Immune SystemSidebar
    Biology of the Immune System
    Nonspecific Immunity: Complement System

    Complete blood count (CBC)

    Diagnosis: Complete Blood Count
    Complete Blood Count (CBC) Tables
    Blood Tests Tables

    Complex partial (psychomotor) seizures

    Seizure Disorders: Symptoms

    Complex regional pain syndrome

    Types: Complex Regional Pain Syndrome

    Compliance (adherence)

  • with drug treatment

  • Making the Most of Drug TreatmentSidebar
    How to Reduce the Risk of Drug-Drug InteractionsSidebar
    Aging and Drugs
    Adherence to Drug Treatment
    Reasons for Not Adhering to Drug TreatmentSidebar

    Compressed air injuries

    Diving and Compressed Air Injuries
    Breathing Air Under High PressureSidebar
    High Risk Factors for DivingSidebar

    Compression bandages

  • in leg ulcers

  • Deep Vein Thrombosis (DVT): Complications

    Compromised host

  • gastroenteritis in

  • Gastroenteritis: Viruses

    Compulsions

    Obsessive-Compulsive Disorder (OCD)

    Computed tomography (CT)

    Anatomy and Disease
    Diagnostic Procedures Tables

  • in acromegaly

  • Acromegaly and Gigantism: Diagnosis

  • in colorectal cancer screening (virtual colonoscopy)

  • Colorectal Cancer: Screening Tests

  • in Crohn's disease

  • Crohn's Disease: Diagnosis

  • in digestive system disorders

  • Diagnosis: Computed Tomography and Magnetic Resonance Imaging

  • electron beam

  • Angina: Diagnosis

  • of eye

  • Diagnosis: Computed Tomography and Magnetic Resonance Imaging

  • of fracture

  • Fractures: Diagnosis

  • in heart disease

  • Diagnosis: Computed Tomography

  • in Hodgkin's disease

  • Hodgkin's Disease: Staging

  • in idiopathic pulmonary fibrosis

  • Idiopathic Pulmonary Fibrosis: Symptoms and Diagnosis

  • in kidney and urinary tract disorders

  • Diagnosis: Computed Tomography

  • of liver

  • Imaging Tests

  • in lung cancer

  • Cancer of the Lungs: Diagnosis
    Cancer Screening Recommendations Tables

  • in lung disorders

  • Diagnosis: Chest Imaging

  • multidetector row

  • Angina: Diagnosis

  • in musculoskeletal disorders

  • Diagnosis: Computed Tomography (CT) and Magnetic Resonance Imaging (MRI)

  • in neurologic disorders

  • How Imaging Tests Help in Diagnosing Nervous System DisordersTables

  • in pancreatitis

  • Acute Pancreatitis: Diagnosis

    Computed tomography angiography (CTA)

    Diagnosis: Computed Tomography
    Pulmonary Embolism (PE): Diagnosis
    How Imaging Tests Help in Diagnosing Nervous System DisordersTables

    Computer keyboard, hand position at

    Proper Keyboard PositionFigures

    Conception

    see Fertilization

    Conchae, nasal

    Nose and Sinuses
    A Look Inside the Nose and ThroatFigures

    Concussion

    Concussion

    Condom

    Proper Condom UseSidebar
    Sexually Transmitted Diseases (STD)
    How Effective Is Contraception?Tables
    Comparing Contraceptive MethodsTables
    Blocking Access: Barrier ContraceptivesFigures
    Contraception: Condoms

    Conduct disorder

    Conduct Disorder

    Conduction aphasia

    Testing a Person With AphasiaSidebar

    Conductive keratoplasty

    Refractive Disorders: Other Refractive Surgery

    Condylomata acuminata

    Genital Warts
    Growths on the Penis

    Condylomata lata

    Syphilis: Symptoms
    Growths on the Penis

    Cones

    Structure and Function

    Confidentiality

    Handling Medical Records
    Confidentiality and HIPAA

    Confusion

    What Is Confusion?Sidebar

  • in delirium

  • Delirium: Symptoms

  • drug-related

  • Some Serious Adverse Drug Reactions Tables

  • in dying person

  • Symptoms During a Fatal Illness: Confusion and Unconsciousness

    Congenital adrenal hyperplasia

    Some Genetic Disorders That Can Be Detected Before BirthTables
    Genital Defects: Female Genital Defects

    Congenital disorders

    see Birth defects; Chromosome(s), abnormalities of; Genetics, disorders of

    Congenital myopathies

    Congenital Myopathies

    Congestive heart failure

    see Heart failure

    Conization

    Diagnostic Procedures Tables

    Conjugate gaze palsies

    Conjugate Gaze Palsies

    Conjunctiva

    An Inside Look at the EyeFigures
    Structure and Function
    Protective Features
    Conjunctival and Scleral Disorders

  • bleeding in

  • Symptoms: Red Eye

  • bleeding under

  • Blunt Injuries to the Eye: Subconjunctival Hemorrhage

  • dark spots on

  • Symptoms: Dark Spots

  • disorders of

  • Conjunctival and Scleral Disorders

  • inflammation of

  • see Conjunctivitis

  • noncancerous growths on

  • Noncancerous Growths

  • sarcoidosis of

  • Sarcoidosis: Symptoms

    Conjunctivitis

    Conjunctivitis
    What Is Pinkeye?Sidebar

  • allergic

  • Seasonal Allergies
    Seasonal Allergies: Treatment
    Allergic Conjunctivitis

  • gonococcal

  • Gonorrhea: Symptoms

  • granular

  • Trachoma

  • hemorrhagic

  • Enteroviral Infections: Common in ChildhoodSidebar

  • inclusion

  • Conjunctivitis

  • in newborn

  • Some Infections of NewbornsTables

  • in Reiter's syndrome

  • Reiter's Syndrome: Symptoms

    Connective tissue

    Tissues and Organs
    Biology of the Musculoskeletal System

  • disorders of

  • autoimmune

  • Autoimmune Disorders of Connective Tissue
    Characteristics of LupusSidebar

  • in diabetes mellitus

  • Long-Term Complications of Diabetes Tables

  • hereditary

  • Hereditary Connective Tissue Disorders

  • mixed

  • Mixed Connective Tissue Disease (MCTD)

  • pulmonary hypertension with