A to Z
Health Topics
- L-glutamine
- Lab Tests for Fibromyalgia
- Labetalol
- Labor and Delivery
- Labor Induction and Augmentation
- Labyrinthitis
- Lacosamide
- Lacosamide Injection
- Lactic Acid Dehydrogenase (LDH) Test
- Lactic Acid Test
- Lactic Acid, Citric Acid, and Potassium Bitartrate Vaginal Contraceptive
- Lactose Intolerance
- Lactulose
- Laetrile/Amygdalin (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
- Laetrile/Amygdalin (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
- Lamivudine
- Lamivudine and Tenofovir
- Lamivudine and Zidovudine
- Lamotrigine
- Lanadelumab-flyo injection
- Langerhans Cell Histiocytosis Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Langerhans Cell Histiocytosis Treatment (PDQ®): Treatment - Patient Information [NCI]
- Language Development Between 12 and 24 Months of Age
- Language Development From Age 6 to 10 Years
- Language Development in Newborns
- Lanreotide Injection
- Lansoprazole
- Lansoprazole, Clarithromycin, and Amoxicillin
- Lanthanum
- Laparoscopic Gallbladder Removal Surgery for Gallstones
- Laparoscopic Gastric Banding
- Laparoscopic Gastric Banding: Returning Home
- Laparoscopic Inguinal Hernia Repair
- Laparoscopic Ovarian Drilling (Ovarian Diathermy) for PCOS
- Laparoscopic Surgery
- Laparoscopic Surgery for Endometriosis
- Laparoscopic Tubal Ligation
- Laparoscopy
- Laparoscopy
- Laparoscopy in Children
- Lapatinib
- Larotrectinib
- Laryngeal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Laryngeal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Laryngitis
- Laryngoscopy
- Laser In-Situ Keratomileusis (LASIK) for Farsightedness
- Laser Iridotomy for Glaucoma
- Laser Photocoagulation and Cryopexy for Retinal Tears
- Laser Photocoagulation for Age-Related Macular Degeneration
- Laser Photocoagulation for Diabetic Retinopathy
- Laser Resurfacing
- Laser Surgery for Genital Warts
- Laser Surgery for Warts
- Laser Trabeculoplasty for Glaucoma
- Laser Treatment for Skin Lesions
- Laser Treatment for Varicose Veins
- LASIK (Laser In-Situ Keratomileusis) for Nearsightedness
- Lasmiditan
- Last Days of Life (PDQ®): Supportive care - Health Professional Information [NCI]
- Last Days of Life (PDQ®): Supportive care - Patient Information [NCI]
- Latanoprost Ophthalmic
- Latanoprostene Bunod Ophthalmic
- Late Effects of Treatment for Childhood Cancer (PDQ®): Treatment - Health Professional Information [NCI]
- Late Effects of Treatment for Childhood Cancer (PDQ®): Treatment - Patient Information [NCI]
- Lateral Collateral Ligament (LCL) Injury
- Lateral collateral ligament injury: Fast Facts
- Laxatives
- Lead (Pb) Test
- Lead Poisoning
- Lead Poisoning Screening
- Leadless Pacemaker
- Learning About Anesthesia for Adults
- Learning About Anesthesia for Your Child
- Learning About Blood Tests for Children
- Learning About Cellulitis
- Learning About Circumcision
- Learning About General Anesthesia
- Learning About General Anesthesia in Children
- Learning About Glucagon
- Learning About Insulin Pens
- Learning About Noninsulin Medicines That Help Manage Type 2 Diabetes
- Learning About Peripheral Nerve Blocks and I.V. Regional Anesthesia
- Learning About Peripheral Nerve Blocks for Your Child
- Learning About Risk for Heart Attack and Stroke
- Learning About Sedation for Adults
- Learning About Sedation for Your Child
- Learning About Spinal and Epidural Regional Anesthesia
- Learning About Spinal, Epidural, and Caudal Anesthesia for Your Child
- Learning About the NICU
- Learning About Your Blood Test
- Learning About Your Child's Bronchoscopy
- Learning About Your Child's CT Scan
- Learning About Your Child's Laryngoscopy
- Learning About Your Child's MRI Test
- Learning About Your Child's Voiding Cystourethrogram (VCUG) Test
- Learning About Your Child's X-Ray Test
- Learning About Your CT Scan
- Learning About Your MRI Test
- Learning About Your X-Ray Test
- Learning Disabilities
- Learning to Say No
- Lecanemab-irmb Injection
- Ledipasvir and Sofosbuvir
- Lefamulin
- Lefamulin Injection
- Leflunomide
- Left Atrial Appendage Closure: Before Your Procedure
- Left Atrial Appendage Closure: Returning Home
- Left Ventricular Hypertrophy (LVH)
- Leg Amputation
- Leg Aneurysm
- Leg Cramps During Pregnancy
- Leg Injuries
- Leg Problems, Noninjury
- Legionnaires' Disease and Pontiac Fever
- Lemborexant
- Lenacapavir Injection
- Lenacapavir Oral
- Lenalidomide
- Leniolisib
- Lennox-Gastaut Syndrome
- Lenvatinib
- Leriche Syndrome
- Lesinurad
- Letermovir
- Letermovir Injection
- Letrozole
- Letting It Go: Getting Past Negative Emotions
- Leucovorin
- Leucovorin Injection
- Leukemia
- Leuprolide Injection
- Levalbuterol Oral Inhalation
- Levels of Evidence for Adult and Pediatric Cancer Treatment Studies (PDQ®): Treatment - Health Professional Information [NCI]
- Levels of Evidence for Cancer Genetics Studies (PDQ®): Genetics - Health Professional Information [NCI]
- Levels of Evidence for Cancer Screening and Prevention Studies (PDQ®): Screening - Health Professional Information [NCI]
- Levels of Evidence for Human Studies of Integrative, Alternative, and Complementary Therapies (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
- Levels of Evidence for Supportive and Palliative Care Studies (PDQ®): Supportive care - Health Professional Information [NCI]
- Levetiracetam
- Levetiracetam Injection
- Levobunolol Ophthalmic
- Levocetirizine
- Levodopa and Carbidopa
- Levodopa Oral Inhalation
- Levofloxacin
- Levofloxacin Injection
- Levoketoconazole
- Levoleucovorin Injection
- Levomilnacipran
- Levonorgestrel
- Levonorgestrel (LNg) IUD
- Levonorgestrel Intrauterine System
- Levorphanol
- Levothyroxine
- Levothyroxine
- LGBTQ Health
- Lidocaine Transdermal Patch
- Lidocaine Viscous
- Lifestyle Changes That May Help Prevent Cancer
- Lifileucel Injection
- Lifitegrast Ophthalmic
- Light Therapy
- Linaclotide
- Linagliptin
- Linda's Story: Getting Active When You Have Prediabetes
- Linda's Story: Quitting Smoking Lowers My Risk
- Lindane
- Linezolid
- Linezolid Injection
- Liothyronine
- Liotrix
- Lip and Oral Cavity Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Lip and Oral Cavity Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Lipase Blood Test
- Lipoma
- Liposuction
- Liraglutide Injection
- Lisdexamfetamine
- Lisinopril
- Lisinopril and Hydrochlorothiazide
- Lisocabtagene Maraleucel Injection
- Listening to Your Kids
- Listeriosis
- Lithium
- Little Leaguer's Elbow (Medial Apophysitis)
- Live Shingles (Zoster) Vaccine (ZVL)
- Live Zoster (Shingles) Vaccine: What You Need to Know
- Liver (Hepatocellular) Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI]
- Liver (Hepatocellular) Cancer Prevention: Prevention - Patient Information [NCI]
- Liver (Hepatocellular) Cancer Screening (PDQ®): Screening - Health Professional Information [NCI]
- Liver (Hepatocellular) Cancer Screening: Screening - Patient Information [NCI]
- Liver and Spleen Scan
- Liver Function Tests
- Liver Resection
- Liver Transplant
- Liver Transplant in Children
- Living Organ Donation
- Living Will
- Living With a Spinal Cord Injury
- Living With an Ostomy
- Living With Chronic Pain
- Living With More Than One Health Problem
- Lixisenatide Injection
- Local Anesthesia
- Lodoxamide Ophthalmic
- Lofexidine
- Log Roll Method for Safe Movement
- Lomitapide
- Lomustine
- Lonafarnib
- Lonapegsomatropin-tcgd injection
- Loncastuximab Tesirine-lpyl Injection
- Loneliness and Your Health
- Long COVID
- Long-Acting Bronchodilators for Your Child
- Long-Acting Injectable Antipsychotic Medicines
- Long-Term Care Choices
- Loop Electrosurgical Excision Procedure (LEEP) for Abnormal Cervical Cell Changes
- Loop Electrosurgical Excision Procedure (LEEP) for Genital Warts
- Loperamide
- Lopinavir and Ritonavir
- Loralie's Story: It's Never Too Late
- Loratadine
- Lorazepam
- Lorcaserin
- Lorlatinib
- Lorna's Story: There's No Fast Cure
- Losartan
- Loteprednol Ophthalmic
- Lovastatin
- Lovotibeglogene autotemcel Injection
- Low Amniotic Fluid
- Low Back Pain
- Low Back Pain and Sex
- Low Back Pain: Easing Back Into Your Daily Activities
- Low Back Pain: Exercises to Reduce Pain
- Low Back Pain: Keep Moving
- Low Back Pain: Keeping It From Coming Back
- Low Back Pain: Should I Have an MRI?
- Low Back Pain: Should I Try Epidural Steroid Shots?
- Low Blood Pressure (Hypotension)
- Low Bone Density
- Low Testosterone
- Low-Lying Placenta Versus Placenta Previa
- Low-Potassium Foods
- Low-Salt Diets: Eating Out
- Low-Vision Accommodations in Your Home
- Lowering Your Health Care Costs
- Loxapine
- LSD
- Lubiprostone
- Luliconazole Topical
- Lumacaftor and Ivacaftor
- Lumateperone
- Lumbar Discectomy: Before Your Surgery
- Lumbar Discectomy: Returning Home
- Lumbar Herniated Disc
- Lumbar Herniated Disc: Should I Have Surgery?
- Lumbar Spinal Fusion (Arthrodesis)
- Lumbar Spinal Stenosis
- Lumbar spinal stenosis: Fast Facts
- Lumbar Spinal Stenosis: Should I Have Surgery?
- Lumbar Spondylosis
- Lumbar spondylosis: Fast Facts
- Lumpectomy
- Lumpectomy: Returning Home
- Lung Biopsy
- Lung Cancer
- Lung Cancer and Other Lung Problems From Smoking
- Lung Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI]
- Lung Cancer Prevention (PDQ®): Prevention - Patient Information [NCI]
- Lung Cancer Screening (PDQ®): Screening - Health Professional Information [NCI]
- Lung Cancer Screening (PDQ®): Screening - Patient Information [NCI]
- Lung Cancer Screening: Low-Dose CT Scan
- Lung Cancer: Should I Have Screening?
- Lung Function in COPD
- Lung Function Tests
- Lung Problems: Breathing Exercises
- Lung Problems: Learning to Breathe Easier
- Lung Problems: Ways to Clear Mucus
- Lung Scan
- Lung Surgery for Lung Cancer
- Lung Surgery: Before Your Surgery
- Lung Surgery: Returning Home
- Lung Transplant
- Lung Transplant for Cystic Fibrosis
- Lungs and Airways
- Lupus (Systemic Lupus Erythematosus)
- Lupus and Antiphospholipid Antibody Syndrome
- Lupus and Pregnancy
- Lurasidone
- Lurbinectedin Injection
- Luspatercept-aamt Injection
- Lusutrombopag
- Luteinizing Hormone (LH) Test
- Lutetium Lu 177 Vipivotide Tetraxetan Injection
- Lyme Disease
- Lyme Disease Test
- Lymph Node Biopsy
- Lymph Node Dissection: Self-Care at Home
- Lymph Node Removal (Lymphadenectomy) for Melanoma
- Lymph Node Removal Surgery (Lymphadenectomy) for Endometrial Cancer
- Lymphedema
- Lymphedema (PDQ®): Supportive care - Health Professional Information [NCI]
- Lymphedema: Managing Lymphedema
- Lymphedema: Supportive care - Patient Information [NCI]