Calcium Deposits and Tendinitis (Calcific Tendinitis)
                  Calf Muscle Injury
                  Calluses and Corns
                  Campylobacteriosis
                  Cancell/Cantron/Protocel (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
                  Cancell/Cantron/Protocel (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
                  Cancer
                  Cancer Fatigue: Supportive care - Patient Information [NCI]
                  Cancer Genetics Overview (PDQ®): Genetics - Health Professional Information [NCI]
                  Cancer Genetics Risk Assessment and Counseling (PDQ®): Genetics - Health Professional Information [NCI]
                  Cancer of Unknown Primary (CUP) Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Cancer Pain
                  Cancer Pain (PDQ®): Supportive care - Health Professional Information [NCI]
                  Cancer Pain (PDQ®): Supportive care - Patient Information [NCI]
                  Cancer Prevention Overview (PDQ®): Prevention - Health Professional Information [NCI]
                  Cancer Prevention Overview (PDQ®): Prevention - Patient Information [NCI]
                  Cancer Screening Overview (PDQ®): Screening - Health Professional Information [NCI]
                  Cancer Screening Overview (PDQ®): Screening - Patient Information [NCI]
                  Cancer Therapy Interactions With Foods and Dietary Supplements (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
                  Cancer Therapy Interactions With Foods and Dietary Supplements (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
                  Cancer-Related Post-Traumatic Stress (PDQ®): Supportive care - Health Professional Information [NCI]
                  Cancer-Related Post-Traumatic Stress (PDQ®): Supportive care - Patient Information [NCI]
                  Cancer: Controlling Cancer Pain
                  Cancer: Controlling Nausea and Vomiting From Chemotherapy
                  Canker Sores
                  Cannabis and Cannabinoids (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
                  Cannabis and Cannabinoids (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
                  Capsaicin
                  Carbon Dioxide Laser Treatment for Abnormal Cervical Cell Changes
                  Carbon Monoxide Poisoning
                  Carcinoma of Unknown Primary Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Cardiac Arrest
                  Cardiac Rehabilitation
                  Cardiopulmonary Syndromes (PDQ®): Supportive care - Health Professional Information [NCI]
                  Cardiopulmonary Syndromes (PDQ®): Supportive care - Patient Information [NCI]
                  Care at the End of Life
                  Caregiver Tips
                  Carotid Artery Disease
                  Carotid Artery Stenting
                  Carotid Endarterectomy
                  Carpal Tunnel Syndrome
                  Cartilage (Bovine and Shark) (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
                  Cartilage (Bovine and Shark) (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
                  Cataract Surgery
                  Cataracts
                  Cataracts in Children
                  Cataracts: Should I Have Surgery?
                  Catheter Ablation for a Fast Heart Rate
                  Catheter Ablation for Atrial Fibrillation
                  Catheters for Male Urinary Incontinence
                 
                
                  Chamomile
                  Change in Heartbeat
                  Chelation Therapy
                  Chemical Peel
                  Chemo Brain
                  Chest Problems
                  Chickenpox (Varicella)
                  Chikungunya Fever
                  Child Abuse and Neglect
                  Childbirth: Pudendal Block
                  Childhood Acute Lymphoblastic Leukemia (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Acute Lymphoblastic Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Acute Myeloid Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Acute Myeloid Leukemia/Other Myeloid Malignancies Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Acute Promyelocytic Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Adrenocortical Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Adrenocortical Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Astrocytomas Treatment: Treatment - Patient Information [NCI]
                  Childhood Astrocytomas, Other Gliomas, and Glioneuronal/Neuronal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Basal Cell Carcinoma and Squamous Cell Carcinoma of the Skin Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Basal Cell Carcinoma and Squamous Cell Carcinoma of the Skin Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Bladder Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Bladder Cancer Treatment: Treatment - Patient Information [NCI]
                  Childhood Brain and Spinal Cord Tumors Summary Index (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Breast Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Cancer Genomics (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Cancer of Unknown Primary (CUP) Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Carcinoma of Unknown Primary Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Cardiac Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Central Nervous System Atypical Teratoid/Rhabdoid Tumor Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Central Nervous System Atypical Teratoid/Rhabdoid Tumor Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Central Nervous System Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Central Nervous System Germ Cell Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Cervical and Vaginal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Cervical and Vaginal Cancer Treatment: Treatment - Patient Information [NCI]
                  Childhood Chordoma (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Chordoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Chronic Myeloid Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Colorectal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Colorectal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Craniopharyngioma (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Craniopharyngioma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Ependymoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Ependymoma: Treatment - Patient Information [NCI]
                  Childhood Esophageal Cancer (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Esophageal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Esthesioneuroblastoma (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Esthesioneuroblastoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Extracranial Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Extracranial Germ Cell Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Gastrointestinal Neuroendocrine Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Gastrointestinal Stromal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Gastrointestinal Stromal Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Heart Tumors (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Hodgkin Lymphoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Hodgkin Lymphoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Intraocular (Uveal) Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Intraocular (Uveal) Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Laryngeal Tumors (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Laryngeal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Liver Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Liver Cancer Treatment: Treatment - Patient Information [NCI]
                  Childhood Medulloblastoma and Other Central Nervous System Embryonal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Medulloblastoma and Other Central Nervous System Embryonal Tumors Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Mesothelioma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Mesothelioma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Multiple Endocrine Neoplasia (MEN) Syndromes Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Multiple Endocrine Neoplasia (MEN) Syndromes Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Myelodysplastic Neoplasms Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Myeloid Proliferations Associated With Down Syndrome Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Nasopharyngeal Cancer (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Nasopharyngeal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Non-Hodgkin Lymphoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Non-Hodgkin Lymphoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood NUT Carcinoma (PDQ®): Treatment - Patient Information [NCI]
                  Childhood NUT Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Oral Cavity Cancer (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Oral Cavity Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Ovarian Cancer (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Ovarian Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Pancreatic Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Pancreatic Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Pheochromocytoma and Paraganglioma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Pheochromocytoma and Paraganglioma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Pleuropulmonary Blastoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Pulmonary Inflammatory Myofibroblastic Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Rhabdomyosarcoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Rhabdomyosarcoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Salivary Gland Tumors (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Salivary Gland Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Soft Tissue Sarcoma (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Soft Tissue Sarcoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Stomach (Gastric) Cancer Treatment: Treatment - Patient Information [NCI]
                  Childhood Testicular Cancer (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Testicular Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Thymoma and Thymic Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Thymoma and Thymic Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Thyroid Cancer (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Thyroid Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Tracheobronchial Tumors (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Tracheobronchial Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Childhood Vascular Tumors (PDQ®): Treatment - Patient Information [NCI]
                  Childhood Vascular Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Children's Health
                  Chlamydia
                  Choking Rescue Procedure: Heimlich Maneuver
                  Cholecystitis
                  Cholera Vaccine: What You Need to Know
                  Cholestasis of Pregnancy
                  Choosing a Health Care Agent
                  Choosing Child Care
                  Chromium
                  Chronic Kidney Disease
                  Chronic Lung Disease in Infants
                  Chronic Lymphocytic Leukemia (CLL)
                  Chronic Lymphocytic Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Chronic Lymphocytic Leukemia Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Chronic Myeloid Leukemia (CML)
                  Chronic Myeloid Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Chronic Myeloid Leukemia Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Chronic Myeloproliferative Neoplasms Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Chronic Pain
                  Chronic Pain: Using Healthy Thinking
                  Chronic Pancreatitis
                  Chronic Pelvic Pain
                 
                
                  Cochlear Implants
                  Coenzyme Q10
                  Coenzyme Q10 (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
                  Coenzyme Q10 (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
                  Cognitive Behavioral Therapy for Eating Disorders
                  Cognitive Behavioral Therapy for Pain Management
                  Cognitive Impairment in Adults With Cancer (PDQ®): Supportive care - Health Professional Information [NCI]
                  Cognitive Impairment in Adults with Cancer (PDQ®): Supportive care - Patient Information [NCI]
                  Cold Sores
                  Cold Temperature Exposure
                  Colds
                  Colds and Flu
                  Colic
                  Collapsed Lung (Pneumothorax)
                  Colon Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
                  Colon Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
                  Colon Polyps
                  Color Blindness
                  Colorectal Cancer
                  Colorectal Cancer Genetic Testing
                  Colorectal Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI]
                  Colorectal Cancer Prevention (PDQ®): Prevention - Patient Information [NCI]
                  Colorectal Cancer Screening (PDQ®): Screening - Health Professional Information [NCI]
                  Colorectal Cancer Screening (PDQ®): Screening - Patient Information [NCI]
                  Colorectal Cancer, Metastatic or Recurrent
                  Colorectal Cancer: Which Screening Test Should I Have?
                  Colostomy
                  Communication in Cancer Care (PDQ®): Supportive care - Health Professional Information [NCI]
                  Communication in Cancer Care (PDQ®): Supportive care - Patient Information [NCI]
                  Complementary Medicine
                  Complementary Medicine
                  Complex Regional Pain Syndrome
                  Complications, Graft-Versus-Host Disease, and Late Effects After Pediatric Hematopoietic Stem Cell Transplant (PDQ®): Treatment - Health Professional Information [NCI]
                  Comprehensive Rehabilitation Programs for Low Back Pain
                  Compression Stockings: How to Use Them
                  Concussion (Mild Traumatic Brain Injury)
                  Confusion, Memory Loss, and Altered Alertness
                  Congenital Heart Disease in Children
                  Congenital Heart Disease: Caring for Your Child
                  Congenital Hydrocele
                  Congenital Hydrocephalus
                  Congenital Torticollis
                  Constipation, Age 11 and Younger
                  Constipation, Age 12 and Older
                  Contact Lenses
                  Continuous Positive Airway Pressure (CPAP) Therapy for Obstructive Sleep Apnea
                  COPD
                  COPD (Chronic Obstructive Pulmonary Disease)
                  COPD: Avoiding Weight Loss
                  COPD: Avoiding Your Triggers
                  COPD: Clearing Your Lungs
                  COPD: Keeping Your Diet Healthy
                  COPD: Lung Volume Reduction
                  COPD: Using Exercise to Feel Better
                  Coping When Your Child Is Near the End of Life
                  Corneal Ring Implants for Nearsightedness
                  Coronary Angioplasty
                  Coronary Artery Bypass Graft Surgery
                  Coronary Artery Disease
                  Coronary Artery Disease: Exercising for a Healthy Heart
                  Coronary Artery Disease: Should I Have an Angiogram?
                  Coronary Artery Disease: Should I Have Angioplasty for Stable Angina?
                  Coronary Artery Disease: Should I Have Bypass Surgery?
                  Coronavirus (COVID-19)
                  Cosmetic Surgery and Procedures
                  Coughs, Age 11 and Younger
                  Coughs, Age 12 and Older
                  COVID-19 Vaccine: What You Need to Know