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Find the resources you need to make informed decisions and improve your health by searching our health library. You'll find up-to-date and evidenced-based information with easy-to-understand explanations of medical conditions, symptoms, tests, and treatments for thousands of topics.

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CD4+ Count Test Medical Test

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Challenge Tests for Asthma Medical Test
Chamomile
Change a Habit by Setting Goals
Change in Heartbeat Symptom
Change Your Outlook to Lower Your Stress
Checklist for Evaluating Hospice Programs
Checklist for Preventing Falls at Home
Checklist for Shoes and Socks That Fit Well
Checklist for the Home for Vertigo
Chelation Therapy
Chemical Peel
Chemical Pinkeye (Conjunctivitis)
Chemistry Screen Medical Test
Chemo Brain
Cheryl's Story: Dealing With Depression
Chest Problems Symptom
Chest X-Ray Medical Test
Chickenpox (Varicella)
Chickenpox: Controlling the Itch
Chickenpox: Preventing Skin Infections
Chikungunya Fever
Chilblains (Perniosis)
Child Abuse and Neglect
Child Abuse: Emotional Abuse by Parents
Child Car Seats
Child Safety: Air Pollution
Child Safety: Bathing
Child Safety: Bicycles and Tricycles
Child Safety: Drowning Prevention in Pools and Hot Tubs
Child Safety: Fires
Child Safety: Guns and Firearms
Child Safety: Pets
Child Safety: Preventing Burns
Child Safety: Preventing Child Abduction
Child Safety: Preventing Drowning
Child Safety: Preventing Falls
Child Safety: Streets and Motor Vehicles
Child Safety: Strollers and Shopping Carts
Child Safety: Washing Toys to Prevent Germs
Child Who Is Overweight: Medical Evaluation
Childbirth Classes
Childbirth Pain Relief Options
Childbirth: I.V. Medicines
Childbirth: Is Planning a C-Section a Good Choice?
Childbirth: Laboring in Water and Water Delivery
Childbirth: Perineal Massage Before Labor
Childbirth: Pudendal Block
Childbirth: Strep Infections During Delivery
Childhood Acute Lymphoblastic Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Acute Lymphoblastic Leukemia Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Acute Myeloid Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Acute Myeloid Leukemia/Other Myeloid Malignancies Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Acute Promyelocytic Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Adrenocortical Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Adrenocortical Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Astrocytomas Treatment: Treatment - Patient Information [NCI] National Cancer Institute
Childhood Astrocytomas, Other Gliomas, and Glioneuronal/Neuronal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Basal Cell Carcinoma and Squamous Cell Carcinoma of the Skin Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Basal Cell Carcinoma and Squamous Cell Carcinoma of the Skin Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Bladder Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Bladder Cancer Treatment: Treatment - Patient Information [NCI] National Cancer Institute
Childhood Brain and Spinal Cord Tumors Summary Index (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Breast Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Cancer Genomics (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Cancer of Unknown Primary (CUP) Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Carcinoma of Unknown Primary Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Cardiac Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Central Nervous System Atypical Teratoid/Rhabdoid Tumor Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Central Nervous System Atypical Teratoid/Rhabdoid Tumor Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Central Nervous System Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Central Nervous System Germ Cell Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Cervical and Vaginal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Cervical and Vaginal Cancer Treatment: Treatment - Patient Information [NCI] National Cancer Institute
Childhood Chordoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Chordoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Chronic Myeloid Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Colorectal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Colorectal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Craniopharyngioma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Craniopharyngioma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Ependymoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Ependymoma: Treatment - Patient Information [NCI] National Cancer Institute
Childhood Esophageal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Esophageal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Esthesioneuroblastoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Esthesioneuroblastoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Extracranial Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Extracranial Germ Cell Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Fears and Exposure to Violence
Childhood Gastrointestinal Neuroendocrine Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Gastrointestinal Stromal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Gastrointestinal Stromal Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Heart Tumors (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Hodgkin Lymphoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Hodgkin Lymphoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Immunization Record
Childhood Immunization Schedule: Ages 0 to 6 Years
Childhood Immunization Schedule: Ages 7 to 18 Years
Childhood Intraocular (Uveal) Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Intraocular (Uveal) Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Laryngeal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Laryngeal Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Liver Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Liver Cancer Treatment: Treatment - Patient Information [NCI] National Cancer Institute
Childhood Medulloblastoma and Other Central Nervous System Embryonal Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Medulloblastoma and Other Central Nervous System Embryonal Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Mesothelioma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Mesothelioma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Midline Tract Carcinoma with NUT Gene Changes Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Multiple Endocrine Neoplasia (MEN) Syndromes Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Multiple Endocrine Neoplasia (MEN) Syndromes Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Myelodysplastic Neoplasms Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Myeloid Proliferations Associated With Down Syndrome Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Nasopharyngeal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Nasopharyngeal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Non-Hodgkin Lymphoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Non-Hodgkin Lymphoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood NUT Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Oral Cavity Cancer (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Oral Cavity Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Ovarian Cancer (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Ovarian Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Pancreatic Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Pancreatic Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Pheochromocytoma and Paraganglioma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Pheochromocytoma and Paraganglioma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Pleuropulmonary Blastoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Pulmonary Inflammatory Myofibroblastic Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Rhabdomyosarcoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Rhabdomyosarcoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Salivary Gland Tumors (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Salivary Gland Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Soft Tissue Sarcoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Soft Tissue Sarcoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Stomach (Gastric) Cancer Treatment: Treatment - Patient Information [NCI] National Cancer Institute
Childhood Testicular Cancer (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Testicular Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Thymoma and Thymic Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Thymoma and Thymic Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Thyroid Cancer (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Thyroid Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Tracheobronchial Tumors (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Childhood Tracheobronchial Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Vascular Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Childhood Vascular Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Children's Growth Chart
Children's Health Learning Center
Chili Pepper Burns
Chiropractic
Chlamydia
Chlamydia Tests Medical Test
Chlorambucil Oral Tablet (CHLORAMBUCIL - ORAL)
Chlordiazepoxide Oral Capsule (CHLORDIAZEPOXIDE - ORAL)
Chlordiazepoxide/Clidinium Oral Capsule (CLIDINIUM/CHLORDIAZEPOXIDE - ORAL)
Chlorhexidine Medicated Liquid Soap
Chlorhexidine Mouthwash (CHLORHEXIDINE GLUCONATE RINSE - ORAL)
Chloride (Cl) Test Medical Test
Chloroprocaine Injection
Chloroquine Oral Tablet (CHLOROQUINE - ORAL)
Chlorothiazide Injection
Chlorothiazide Oral Suspension (CHLOROTHIAZIDE - ORAL)
Chlorothiazide Oral Tablet (CHLOROTHIAZIDE - ORAL)
Chloroxylenol/Hydrocortisone/Pramoxine Otic Solution
Chlorpheniramine Extended Release Oral Capsule (CHLORPHENIRAMINE - ORAL)
Chlorpheniramine Extended Release Oral Tablet (CHLORPHENIRAMINE - ORAL)
Chlorpheniramine Oral Solution (CHLORPHENIRAMINE - ORAL)
Chlorpheniramine Oral Tablet (CHLORPHENIRAMINE - ORAL)
Chlorpheniramine/Codeine/Phenylephrine Oral Solution (DECONGESTANT/OPIOID ANTITUSSIVE/ANTIHISTAMINE - ORAL)
Chlorpheniramine/Dextromethorphan Oral Solution (NON-OPIOID ANTITUSSIVE/ANTIHISTAMINE - ORAL)
Chlorpheniramine/Dextromethorphan/Phenylephrine Oral Solution (DEXTROMETHORPHAN/DECONGESTANT/ANTIHISTAMINE - ORAL)
Chlorpheniramine/Hydrocodone Extended Release Oral Capsule (OPIOID ANTITUSSIVE/ANTIHISTAMINE - ORAL)
Chlorpheniramine/Hydrocodone Extended Release Suspension (HYDROCODONE/CHLORPHENIRAMINE POLISTIREX ER SUSPENSION - ORAL)
Chlorpheniramine/Phenylephrine Oral Solution (ANTIHISTAMINES/DECONGESTANTS - ORAL)
Chlorpheniramine/Phenylephrine Oral Tablet (ANTIHISTAMINES/DECONGESTANTS - ORAL)
Chlorpheniramine/Pseudoephedrine Oral Solution (ANTIHISTAMINES/DECONGESTANTS - ORAL)
Chlorpheniramine/Pseudoephedrine Oral Tablet (ANTIHISTAMINES/DECONGESTANTS - ORAL)
Chlorpromazine Injection (CHLORPROMAZINE - INJECTION)
Chlorpromazine Oral Solution (CHLORPROMAZINE - ORAL)
Chlorpromazine Oral Tablet (CHLORPROMAZINE - ORAL)
Chlorthalidone Oral Tablet (CHLORTHALIDONE - ORAL)
Chlorzoxazone Oral Tablet (CHLORZOXAZONE - ORAL)
Choking Rescue for Babies
Choking Rescue Procedure: Heimlich Maneuver
Cholecystitis
Cholera Vaccine: What You Need to Know
Cholestasis of Pregnancy
Cholesterol and Triglycerides Tests Medical Test
Cholesterol and Triglycerides: Eating Fish and Fish Oil
Cholesterol in Children and Teens
Cholesterol Treatment Guidelines
Cholestyramine Resin Powder For Oral Suspension (CHOLESTYRAMINE - ORAL)
Cholic Acid Oral Capsule
Choline/Magnesium Salicylate Oral Solution
Choline/Magnesium Salicylate Oral Tablet
Chondroitin Sulfates/Glucosamine Oral Tablet
Chondroitin Sulfates/Glucosamine/Methylsulfonylmethane Oral Tablet
Choosing a Counselor or Therapist for Your Child
Choosing a Health Care Agent
Choosing a Health Care Provider
Choosing a Hospital
Choosing a Nursing Home
Choosing a Prosthesis After Breast Cancer Surgery
Choosing a Vitamin and Mineral Supplement
Choosing a Weight-Loss Program
Choosing an Insulin Pump
Choosing Baby Bottles and Nipples
Choosing Child Care
Choosing Healthy Foods When You Have More Than One Health Problem
Chorionic Gonadotropin Injectable Solution (CHORIONIC GONADOTROPIN - INTRAMUSCULAR)
Chorionic Gonadotropin Prefilled Syringe (CHORIOGONADOTROPIN ALFA INJECTION - PREFILLED SYRINGE/PEN)
Chorionic Villus Sampling (CVS) Medical Test
Chromium
Chronic Constipation
Chronic Illness: Help for Caregivers
Chronic Kidney Disease
Chronic Kidney Disease: Medicines to Be Careful With
Chronic Lung Disease in Infants
Chronic Lymphocytic Leukemia (CLL)
Chronic Lymphocytic Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Chronic Lymphocytic Leukemia Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Chronic Myelogenous Leukemia Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Chronic Myeloid Leukemia (CML)
Chronic Myeloid Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Chronic Myeloproliferative Neoplasms Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Chronic Myeloproliferative Neoplasms Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Chronic Pain
Chronic Pain Syndrome
Chronic Pain: Using Healthy Thinking Actionset
Chronic Pancreatitis
Chronic Pancreatitis: Pain Management
Chronic Pelvic Pain

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