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All Health Topics
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- Labor see Childbirth
- Laboratory Tests
- Lacerations see Wounds
- Lactose Intolerance
- Language Problems see Speech and Communication Disorders; Speech and Language Problems in Children
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- Laryngeal Cancer see Throat Cancer
- Laryngitis see Throat Disorders; Voice Disorders
- Laryngopharyngeal Cancer see Throat Cancer
- Laser Eye Surgery
- LASIK see Laser Eye Surgery
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- Latex Allergy
- Latino Health see Hispanic-American Health
- LDL see Cholesterol
- Lead Poisoning
- Learning Disorders
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- Leg Cramps see Leg Injuries and Disorders; Muscle Cramps
- Leg Injuries and Disorders
- Legg-Calve-Perthes Disease see Osteonecrosis
- Legionnaires' Disease
- Leishmaniasis
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- Leprosy see Mycobacterial Infections
- Lesbian Health see Gay, Lesbian, Bisexual and Transgender Health
- Leukemia
- Leukemia, Acute Lymphoblastic see Acute Lymphocytic Leukemia
- Leukemia, Acute Lymphocytic see Acute Lymphocytic Leukemia
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- Leukemia, Childhood see Childhood Leukemia
- Leukemia, Chronic Lymphocytic see Chronic Lymphocytic Leukemia
- Leukemia, Myeloblastic, Acute see Acute Myeloid Leukemia
- Leukemia, Myelogenous, Acute see Acute Myeloid Leukemia
- Leukemia, Myeloid, Acute see Acute Myeloid Leukemia
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- Leukemia, Myeloid, Chronic see Chronic Myeloid Leukemia
- Leukodystrophies
- Lewy Body Disease
- Lice see Head Lice; Parasitic Diseases
- Life Support see Critical Care
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- Ligament Injuries see Sprains and Strains
- Limb Loss
- Listeria Infections
- Liver Cancer
- Liver Cirrhosis see Cirrhosis
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- Liver Diseases
- Liver Spots see Skin Aging
- Liver Transplantation
- Living Wills see Advance Directives
- Living with Cancer see Cancer--Living with Cancer
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- Living with HIV/AIDS
- Lockjaw see Tetanus
- Long-Term Care see Assisted Living; Nursing Homes
- Lou Gehrig's Disease see Amyotrophic Lateral Sclerosis
- Low Back Pain see Back Pain
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- Low Blood Pressure
- Low Blood Sugar see Hypoglycemia
- Low Sperm Count see Male Infertility
- Low Vision see Vision Impairment and Blindness
- LTK see Laser Eye Surgery
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- Lumbago see Back Pain
- Lumpectomy see Mastectomy
- Lung Cancer
- Lung Diseases
- Lung Rehabilitation see Pulmonary Rehabilitation
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- Lung Transplantation
- Lupus
- Lyme Disease
- Lymph Nodes see Lymphatic Diseases
- Lymphatic Diseases
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- Lymphatic Obstruction see Lymphedema
- Lymphedema
- Lymphoma
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- Pacemakers and Implantable Defibrillators
- Pacific Islander Health see Asian-American Health
- PAD see Peripheral Arterial Disease
- Paget's Disease of Bone
- Paget's Disease of Breast see Breast Cancer
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- Pain
- Pain Relievers
- Pain, Abdominal see Abdominal Pain
- Pain, Back see Back Pain
- Pain, Chest see Chest Pain
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- Pain, Chronic see Chronic Pain
- Painkillers see Pain Relievers
- Palliative Care
- Pancreas Transplantation
- Pancreatic Cancer
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- Pancreatic Diseases
- Pancreatitis
- Panic Disorder
- Pantothenic Acid see B Vitamins
- PAP Smear see Cervical Cancer
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- Paralysis
- Paralysis Agitans see Parkinson's Disease
- Paralysis, Infantile see Polio and Post-Polio Syndrome
- Paralytic Ileus see Intestinal Obstruction
- Paranasal Sinus Cancer see Nasal Cancer
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- Paraplegia see Paralysis
- Parasitic Diseases
- Parathyroid Disorders
- Parenteral Nutrition see Nutritional Support
- Parenting
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- Parkinson's Disease
- Paronychia see Nail Diseases
- Parotid Gland Cancer see Salivary Gland Cancer
- Parotid Gland Disorders see Salivary Gland Disorders
- Partner Abuse see Domestic Violence
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- Passive Smoking see Secondhand Smoke
- Patella see Knee Injuries and Disorders
- Paternity Testing see Genetic Testing
- Pathological Gambling see Compulsive Gambling
- Patient Records see Personal Health Records
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- Patient Rights
- Patient Safety
- PCOS see Polycystic Ovary Syndrome
- Peanut Allergy see Food Allergy
- Pediatrics see Children's Health
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- Pee see Urine and Urination
- Pelvic Exam see Women's Health Checkup
- Pelvic Inflammatory Disease
- Pelvic Pain
- Pelvic Support Problems
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- Pelvis see Hip Injuries and Disorders
- Pemphigoid see Pemphigus
- Pemphigus
- Penile Disorders see Penis Disorders
- Penis Disorders
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- Peptic Ulcer
- Performance-Enhancing Drugs see Anabolic Steroids; Sports Fitness
- Pericardial Disorders
- Pericardial Effusion see Pericardial Disorders
- Pericarditis see Pericardial Disorders
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- Perimenopause see Menopause
- Periodontal Disease see Gum Disease
- Peripheral Arterial Disease
- Peripheral Nerve Disorders
- Peritoneal Dialysis see Dialysis
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- Peritoneal Disorders
- Peritonitis see Peritoneal Disorders
- Persian Gulf War see Veterans and Military Health
- Persistent Vegetative State see Coma
- Personal Health Records
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- Personality Disorders
- Perspiration see Sweat
- Pertussis see Whooping Cough
- Pervasive Developmental Disorder see Autism
- Pesticides
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- Pet Health
- PET Scans see Nuclear Scans
- Pets see Pet Health
- Peyronie's Disease see Penis Disorders
- Pfiesteria Infections see Water Pollution
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- Phantom Limb see Limb Loss
- Pharyngeal Cancer see Throat Cancer
- Pharyngitis see Sore Throat
- Pharynx Disorders see Throat Disorders
- Phenylketonuria
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- Pheochromocytoma
- Phlebitis see Deep Vein Thrombosis
- Phobias
- Phosphorus see Minerals
- Physical Fitness see Exercise and Physical Fitness
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- Physical Therapy see Rehabilitation
- Phytotherapy see Herbal Medicine
- Pica see Eating Disorders
- PID see Pelvic Inflammatory Disease
- Piercing and Tattoos
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- Piles see Hemorrhoids
- Pilonidal Cyst see Tailbone Disorders
- Pimples see Acne
- Pinguecula see Eye Diseases
- Pinkeye
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- Pinworms
- Pituitary Disorders
- Pituitary Tumors
- PKU see Phenylketonuria
- Plague
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- Plantar Fasciitis see Heel Injuries and Disorders
- Plantar Warts see Warts
- Plaque, Atherosclerotic see Atherosclerosis
- Plaque, Dental see Gum Disease; Tooth Disorders
- Plasma-cell Myeloma see Multiple Myeloma
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- Plasmacytoma see Multiple Myeloma
- Plastic and Cosmetic Surgery
- Platelet Disorders
- Pleural Disorders
- Pleural Effusion see Pleural Disorders
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- Pleurisy see Pleural Disorders
- Plumbism see Lead Poisoning
- PMS see Premenstrual Syndrome
- Pneumococcal Infections
- Pneumoconiosis see Interstitial Lung Diseases
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- Pneumocystis Infections
- Pneumonia
- Pneumonic Plague see Plague
- Pneumothorax see Chest Injuries and Disorders; Pleural Disorders
- Poison Ivy, Oak and Sumac
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- Poison Oak see Poison Ivy, Oak and Sumac
- Poison Sumac see Poison Ivy, Oak and Sumac
- Poisoning
- Poisons in the Home see Household Products
- Polio and Post-Polio Syndrome
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- Poliomyelitis see Polio and Post-Polio Syndrome
- Pollen Allergy see Hay Fever
- Pollution see Water Pollution
- Polychondritis see Cartilage Disorders
- Polycystic Kidney Disease see Kidney Cysts; Kidney Diseases
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- Polycystic Ovary Syndrome
- Polymyalgia Rheumatica
- Polymyositis see Myositis
- Poop see Bowel Movement
- Porphyria
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- Positional Plagiocephaly see Craniofacial Abnormalities
- Post-herpetic Neuralgia see Shingles
- Post-polio Syndrome see Polio and Post-Polio Syndrome
- Post-Traumatic Stress Disorder
- Postoperative Care see After Surgery
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- Postpartum Care
- Postpartum Depression
- Postural OrthostaticTachycardia Syndrome see Autonomic Nervous System Disorders
- Potassium
- Potty Training see Toilet Training
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- PPS see Polio and Post-Polio Syndrome
- Prader-Willi Syndrome
- Pre-diabetes
- Preconception Care
- Prednisone see Steroids
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- Preeclampsia see High Blood Pressure in Pregnancy
- Preemies see Premature Babies
- Pregnancy
- Pregnancy and AIDS see HIV/AIDS and Pregnancy
- Pregnancy and Diabetes see Diabetes and Pregnancy
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- Pregnancy and Health Problems see Health Problems in Pregnancy
- Pregnancy and Medicines
- Pregnancy and Nutrition
- Pregnancy and Substance Abuse
- Pregnancy Hazards see Reproductive Hazards
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- Pregnancy Loss see Miscarriage; Stillbirth
- Pregnancy, High-Risk see Health Problems in Pregnancy
- Pregnancy, Infections in see Infections and Pregnancy
- Pregnancy, Teen see Teenage Pregnancy
- Premature Babies
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- Premature Labor see Childbirth Problems
- Premature Menopause see Menopause
- Premature Ovarian Failure
- Premenstrual Syndrome
- Prenatal Care
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- Prenatal Testing
- Presbycusis see Hearing Disorders and Deafness
- Presbyopia see Refractive Errors
- Prescription Drug Abuse
- Pressure Sores
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- Prevention see Healthy Living
- Primary Pulmonary Hypertension see Pulmonary Hypertension
- Prion Diseases see Creutzfeldt-Jakob Disease; Degenerative Nerve Diseases
- Privacy see Patient Rights; Personal Health Records
- PRK see Laser Eye Surgery
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- Proctitis see Rectal Disorders
- Progeria see Genetic Disorders
- Progressive Supranuclear Palsy
- Prolactinoma see Pituitary Tumors
- Prostate Cancer
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- Prostate Diseases
- Prosthetic Limbs see Artificial Limbs
- Protective Eye Wear see Eye Injuries; Eye Wear
- Proteins see Dietary Proteins
- Proteinuria see Urine and Urination
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- Pruritus see Itching
- Pruritus Ani see Anal Disorders
- Pseudogout see Gout
- Psoriasis
- Psoriatic Arthritis see Arthritis
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- Psychiatric Disorders see Mental Disorders
- Psychological Stress see Stress
- Psychotic Disorders
- Ptosis see Eyelid Disorders
- PTSD see Post-Traumatic Stress Disorder
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- Puberty
- Pulmonary Embolism
- Pulmonary Emphysema see Emphysema
- Pulmonary Fibrosis
- Pulmonary Hypertension
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- Pulmonary Rehabilitation
- PXE see Connective Tissue Disorders
- Pyelonephritis see Urinary Tract Infections
- Pyrexia see Fever
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- SAD see Seasonal Affective Disorder
- Safety
- Safety, Child see Child Safety
- Salivary Gland Cancer
- Salivary Gland Disorders
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- Salmonella Infections
- Salt see Dietary Sodium
- Sarcoidosis
- Sarcoma, Ewing's see Bone Cancer
- Sarcoma, Soft Tissue see Soft Tissue Sarcoma
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- SARS see Severe Acute Respiratory Syndrome
- Scabies
- Scapula Injuries see Shoulder Injuries and Disorders
- Scarlet Fever see Streptococcal Infections
- Scars
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- Schizophrenia
- School Health
- Sciatica
- SCID see Immune System and Disorders
- Scleroderma
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- Scoliosis
- Screening Tests see Health Screening
- Screening, Newborn see Newborn Screening
- Seasickness see Motion Sickness
- Seasonal Affective Disorder
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- Second Opinion see Patient Rights; Surgery; Talking With Your Doctor
- Secondhand Smoke
- Seizures
- Selenium see Minerals
- Semen see Testicular Disorders
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- Seminoma see Testicular Cancer
- Senility see Dementia
- Seniors' Fitness see Exercise for Seniors
- Seniors' Health
- Seniors' Nutrition see Nutrition for Seniors
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- Sepsis
- Septic Arthritis see Infectious Arthritis
- Septic Shock see Sepsis; Shock
- Septic Systems see Water Pollution
- Septicemia see Sepsis
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- Severe Acute Respiratory Syndrome
- Severe Combined Immunodeficiency see Immune System and Disorders
- Sewage see Water Pollution
- Sex see Sexual Health
- Sexting see Internet Safety
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- Sexual Abuse of Children see Child Sexual Abuse
- Sexual Assault
- Sexual Health
- Sexual Health, Teen see Teen Sexual Health
- Sexual Problems in Men
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- Sexual Problems in Women
- Sexually Transmitted Diseases
- Shaken Baby Syndrome see Child Abuse
- Shaking Palsy see Parkinson's Disease
- Shingles
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- Shock
- Shoes see Foot Health
- Shortness of Breath see Breathing Problems
- Shoulder Impingement see Rotator Cuff Injuries
- Shoulder Injuries and Disorders
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- Shy-Drager Syndrome see Autonomic Nervous System Disorders; Low Blood Pressure
- Sickle Cell Anemia
- Sickle Cell Disease see Sickle Cell Anemia
- SIDS see Sudden Infant Death Syndrome
- Sigmoidoscopy see Colonoscopy
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- Sinus Cancer see Nasal Cancer
- Sinus Infection see Sinusitis
- Sinusitis
- Sjogren's Syndrome
- Skin Aging
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- Skin Cancer
- Skin Conditions
- Skin Infections
- Skin Pigmentation Disorders
- Skin Rash see Rashes
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- Skull Fractures see Head Injuries
- Skull Injuries see Head Injuries
- SLE see Lupus
- Sleep Apnea
- Sleep Disorders
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- Sleep-disordered Breathing see Sleep Apnea
- Slipped Disk see Herniated Disk
- SMA see Spinal Muscular Atrophy
- Small Cell Lung Cancer see Lung Cancer
- Small Intestine Cancer see Intestinal Cancer
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- Small Intestine Disorders
- Smallpox
- Smelling Disorders see Taste and Smell Disorders
- Smokeless Tobacco
- Smoking
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- Smoking and Youth
- Smoking Cessation see Quitting Smoking
- Smoking in Pregnancy see Pregnancy and Substance Abuse
- Smoking, Passive see Secondhand Smoke
- Snake Bites see Animal Bites
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- Snoring
- Snuff see Smokeless Tobacco
- Social Phobia see Phobias
- Sodium, Dietary see Dietary Sodium
- Soft Tissue Sarcoma
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- Sonogram see Ultrasound
- Sore Throat
- South American Trypanosomiasis see Chagas Disease
- Spasmodic Torticollis see Dystonia
- Spasticity see Neuromuscular Disorders
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- Speech and Communication Disorders
- Speech and Language Problems in Children
- Spider Bites
- Spider Veins see Varicose Veins
- Spina Bifida
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- Spinal Cord Diseases
- Spinal Cord Injuries
- Spinal Muscular Atrophy
- Spinal Stenosis
- Spine Injuries and Disorders
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- Spit Tobacco see Smokeless Tobacco
- Spleen Diseases
- Splenic Diseaess see Spleen Diseases
- Splenomegaly see Spleen Diseases
- Splinters see Foreign Bodies
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- Spondylitis, Ankylosing see Ankylosing Spondylitis
- Spondylolisthesis see Spine Injuries and Disorders
- Spontaneous Abortion see Miscarriage
- Sports Fitness
- Sports Injuries
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- Sports Safety
- Spouse Abuse see Domestic Violence
- Sprains and Strains
- Squint see Eye Movement Disorders
- SSRIs see Antidepressants
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- Stammering see Stuttering
- Staphylococcal Infections
- Statins
- Statistics see Health Statistics
- Staying Healthy see Healthy Living
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- STD see Sexually Transmitted Diseases
- Steele-Richardson-Olszewski Syndrome see Progressive Supranuclear Palsy
- Stein-Leventhal Syndrome see Polycystic Ovary Syndrome
- Stem Cell Transplantation see Stem Cells
- Stem Cells
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- Stepfamilies see Family Issues
- Sterility see Infertility
- Sterilization see Tubal Ligation; Vasectomy
- Steroids
- Steroids, Anabolic see Anabolic Steroids
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- Still's Disease see Juvenile Rheumatoid Arthritis
- Stillbirth
- Stoma see Ostomy
- Stomach Ache see Abdominal Pain; Stomach Disorders
- Stomach Cancer
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- Stomach Disorders
- Stomach Flu see Gastroenteritis
- Stomach Stapling see Weight Loss Surgery
- Stomach Ulcer see Peptic Ulcer
- Stool see Bowel Movement
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- Strabismus see Eye Movement Disorders
- Strep Throat see Streptococcal Infections
- Streptococcal Infections
- Streptococcus Pneumoniae Infections see Pneumococcal Infections
- Stress
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- Stress Incontinence see Urinary Incontinence
- Stroke
- Stroke Rehabilitation
- Stuttering
- Stye see Eyelid Disorders
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- Substance Abuse see Alcoholism; Drug Abuse; Drugs and Young People
- Substance Abuse in Pregnancy see Pregnancy and Substance Abuse
- Sudden Cardiac Death see Cardiac Arrest
- Sudden Infant Death Syndrome
- Sugar see Carbohydrates
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- Sugar Diabetes see Diabetes; Diabetes Type 2
- Sugar Substitutes see Carbohydrates
- Suicide
- Sun Exposure
- Sunburn see Sun Exposure
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- Sunscreen see Sun Exposure
- Sunstroke see Heat Illness
- Surgery
- Surgery, Plastic see Plastic and Cosmetic Surgery
- Swallowing Disorders
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- Sweat
- Sweeteners, Artificial see Carbohydrates
- Swimmer's Ear see Ear Infections
- Swine Flu see H1N1 Flu (Swine Flu)
- Swollen Glands see Lymphatic Diseases
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- Syncope see Fainting
- Syndrome X (Cardiac) see Angina
- Syndrome X (Metabolic) see Metabolic Syndrome
- Syphilis
- Syringomyelia
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- Systemic Lupus Erythematosus see Lupus
- Systemic Sclerosis see Scleroderma