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THE MERCK MANUAL MEDICAL LIBRARY: The Merck Manual of Medical Information--Home Edition
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Le

Lead

  • poisoning with

  • Lead Poisoning

  • reference range for

  • Using Lasers to Treat Skin ProblemsSidebar

    Learning disorders

    Learning Disorders

  • in ADHD

  • Attention Deficit/Hyperactivity Disorder (ADD, ADHD)

  • information resources on

  • La - Lu

    Leber's hereditary optic neuropathy

    Inheritance of Single-Gene Disorders: Abnormal Mitochondrial Genes
    Other Primary Demyelinating Diseases: Leber's Hereditary Optic Neuropathy

    Leboyer method

    Natural ChildbirthSidebar

    Leflunomide

    Drugs Used to Treat Rheumatoid ArthritisTables
    Rheumatoid Arthritis (RA): Immunosuppressive Drugs

    Leg

  • amputation of

  • Occlusive Peripheral Arterial Disease: Arteries of the Legs and Arms
    Diabetes Mellitus (DM): Complications

  • prosthetics for

  • Limb Prosthetics
    Types of ProsthesesFigures
    Options for ProsthesesTables

  • rehabilitation after

  • Specific Problems: Limb Amputation

  • arterial disease of

  • Occlusive Peripheral Arterial Disease
    Bypass Surgery in the LegFigures
    Caring for the FeetSidebar

  • birth defects of

  • Bone and Muscle Defects: Limb and Joint Defects

  • bowing of

  • Common Foot, Knee, and Leg Conditions in Infants and Young ChildrenSidebar

  • chilblains of

  • Nonfreezing Tissue Injuries

  • claudication in

  • Occlusive Peripheral Arterial Disease: Arteries of the Legs and Arms
    Occlusive Peripheral Arterial Disease: Arteries of the Legs and Arms

  • deep vein thrombosis in

  • Deep Vein Thrombosis (DVT)
    Umbrellas: One Way to Prevent Pulmonary EmbolismFigures

  • fracture of

  • Leg

  • lymphatic vessel deficiency in

  • Lymphedema

  • lymphedema in

  • Lymphedema

  • pain in

  • Symptoms: Pain in the Limbs

  • in thromboangiitis obliterans

  • Occlusive Peripheral Arterial Disease: Symptoms

  • when walking

  • Occlusive Peripheral Arterial Disease: Arteries of the Legs and Arms
    Occlusive Peripheral Arterial Disease: Arteries of the Legs and Arms

  • popliteus tendinitis of

  • Popliteus Tendinitis

  • reattachment of

  • Reattaching a Body PartSidebar

  • restless

  • Periodic Limb Movement Disorder and Restless Legs Syndrome

  • sciatica of

  • What Is Sciatica?Figures

  • severed or constricted

  • Severed or Constricted Limbs or Digits

  • shin splints in

  • Shin Splints
    Shin SplintsFigures
    Strengthening the Shin MusclesSidebar

  • splint for

  • Commonly Used SplintsFigures

  • stasis dermatitis of

  • Dermatitis: Stasis Dermatitis

  • swelling (edema) of

  • Heart Failure: Symptoms
    Lymphedema

  • thrombophlebitis of

  • Deep Vein Thrombosis (DVT)
    Superficial Thrombophlebitis

  • torsion of

  • Common Foot, Knee, and Leg Conditions in Infants and Young ChildrenSidebar

  • ulcers of

  • Occlusive Peripheral Arterial Disease: Arteries of the Legs and Arms
    Deep Vein Thrombosis (DVT): Complications

  • varicose veins of

  • Varicose Veins
    Valves in Varicose VeinsFigures

  • veins of

  • Venous Disorders
    One-Way Valves in the VeinsFigures

    Legal issues

    Legal and Ethical Issues

  • advance directive

  • Legal and Ethical Concerns: Advance Directives
    Legal Terms Related to Health CareSidebar
    Advance Directives

  • in child abuse and neglect

  • Child Neglect and Abuse

  • competency

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

  • confidentiality

  • Confidentiality and HIPAA

  • in death and dying

  • Legal and Ethical Concerns

  • disclosure

  • Confidentiality and HIPAA

  • do-not-resuscitate order

  • Do-Not-Resuscitate (DNR) Orders

  • durable power of attorney for health care

  • Legal Terms Related to Health CareSidebar
    Advance Directives: Durable Power of Attorney for Health Care

  • informed consent

  • Informed Consent

  • living will

  • Legal Terms Related to Health CareSidebar
    Advance Directives: Living Will

  • surrogate decision making

  • Surrogate Decision Making

    Legg-Calvé-Perthes disease

    Legg-Calvé-Perthes Disease

    Legionnaires disease

    What is Legionnaires' Disease?Sidebar

    Leiomyoma

  • esophagus

  • Esophageal Tumors That Are Noncancerous

  • small intestine

  • Small Intestine Tumors That Are Noncancerous

  • uterus

  • Fibroids

    Leiomyosarcoma

  • small intestine

  • Rare Types of Small-Intestinal CancerSidebar

  • stomach

  • Rare Types of Stomach CancerSidebar

    Leishmaniasis

    Leishmaniasis

    Lenalidomide

    Multiple Myeloma: Treatment and Prognosis

    Length

  • of infant

  • An Infant's First Year: Physical DevelopmentFigures

  • metric equivalents for

  • Equivalents for Weight, Volume and Length Tables

  • of newborn

  • Physical Examination

    Lens(es)

    An Inside Look at the EyeFigures
    Structure and Function

  • age-associated changes in

  • Effects of Aging

  • cloudiness of (cataract)

  • Cataract
    How Cataracts Affect VisionFigures

  • congenital

  • Other Birth DefectsTables

  • in electrical injury

  • Electrical Injuries: Symptoms

  • in galactosemia

  • Carbohydrate Metabolism: Galactosemia

  • dislocation of, in homocystinuria

  • Amino Acid Metabolism: Homocystinuria

  • intraocular, implantation of

  • Refractive Disorders: Other Refractive Surgery
    Cataract: Treatment

    Lensectomy

    Refractive Disorders: Other Refractive Surgery

    Lepirudin

    Drugs and Blood Clots: A Complicated RelationshipSidebar

    Leprosy

    Leprosy

  • information resources on

  • La - Lu

    Leptin

    Major Hormones Tables

    Leptomeningeal cyst

    Skull Fracture: Skull Fractures in Children

    Leptospirosis

    Leptospirosis

    Leriche syndrome

    Occlusive Peripheral Arterial Disease: Lower Aorta and Common Iliac Arteries

    Let-down reflex

    Home (What to Expect)
    Feeding: Breastfeeding Procedure

    Letrozole

    Chemotherapy DrugsTables

    Leukemia

    Leukemias
    Overview of Cancer: Types of Cancer

  • acute lymphocytic (lymphoblastic)

  • Acute Lymphocytic Leukemia (ALL)

  • acute myelocytic (myeloid, myelogenous, myeloblastic, myelomonocytic)

  • Myelodysplastic SyndromesSidebar
    Acute Myelocytic Leukemia (AML)

  • acute promyelocytic

  • Acute Myelocytic Leukemia (AML)
    Acute Myelocytic Leukemia (AML): Treatment

  • adult T-cell

  • Leukemias: Causes

  • chronic lymphocytic (lymphoblastic)

  • Chronic Lymphocytic Leukemia (CLL)

  • chronic myelocytic (myeloid, myelogenous, granulocytic)

  • Chronic Myelocytic Leukemia (CML)

  • gingivitis in

  • Gingivitis: Gingivitis due to Leukemia

  • hairy cell

  • Chronic Lymphocytic Leukemia (CLL)
    Chronic Lymphocytic Leukemia (CLL): Treatment

  • T-cell

  • Chronic Lymphocytic Leukemia (CLL)

    Leukocyte

    see White blood cells

    Leukocyte adhesion defects

    Some Congenital Immunodeficiency Disorders Tables

    Leukocyte esterase

    Diagnosis: Urinalysis

    Leukocyte glucose-6-phosphate dehydrogenase deficiency

    Some Congenital Immunodeficiency Disorders Tables

    Leukocytosis

    Components of Blood: White Blood Cells
    White Blood Cell Disorders

  • lymphocytic

  • Lymphocytic Leukocytosis

  • neutrophilic

  • Neutrophilic Leukocytosis

    Leukoedema

    Color Changes in the MouthSidebar

    Leukoencephalopathy, progressive multifocal

    Progressive Multifocal Leukoencephalopathy

    Leukopenia

    Components of Blood: White Blood Cells
    Symptoms
    White Blood Cell Disorders

  • with cancer treatment

  • Chemotherapy: Low Blood Cell Counts

    Leukoplakia

    Precancerous Lesions

  • hairy

  • Tongue Disorders: "Hairiness"

    Leukotriene modifiers

    Asthma: Leukotriene Modifiers
    Drugs Used to Treat AsthmaTables
    Asthma: Prognosis, Prevention, and Treatment

    Leuprolide

    Drugs Commonly Used to Treat EndometriosisTables

  • in precocious puberty

  • When Puberty Starts Too EarlySidebar

  • in prostate cancer

  • Cancer: Hormonal Therapy

    Levalbuterol

    Drugs Used to Treat AsthmaTables

    Levator syndrome

    Levator Syndrome

    Levetiracetam

    Drugs Used to Treat SeizuresTables

    Levobetaxalol

    Drugs Used to Treat GlaucomaTables

    Levobunolol

    Drugs Used to Treat GlaucomaTables

    Levodopa

    Parkinson's Disease: Levodopa-Carbidopa
    Drugs Used to Treat Parkinson's DiseaseTables

    Levofloxacin

    AntibioticsTables

  • during pregnancy

  • Some Drugs That Can Cause Problems During PregnancyTables

    Levonorgestrel

    Contraception: Emergency Contraception

    Levorphanol

    Opioid AnalgesicsTables

    Lewy bodies

    Parkinson's Disease

    Lewy body dementia

    Dementia: Lewy Body Dementia

    Leyden-Möbius muscular dystrophy

    Other Forms of Muscular Dystrophy

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