• Lacerations

• Lactose Intolerance

• Lambert-Eaton Myasthenic Syndrome

• Larynx Cancer

• Lazy Eye - See Amblyopia

• Lead

• Legg-Calve-Perthes Disease

• Leishmania Infections

• Lesch-Nyhan Syndrome

• Leukemia

See also: Acute Lymphocytic Leukemia

See also: Acute Myelogenous Leukemia

See also: Chronic Lymphocytic Leukemia

See also: Chronic Myelogenous Leukemia

• Leukodystrophies

See also: Adrenoleukodystrophy

• Leukoplakia

• Lice

• Lichen Planus

• Lichen Sclerosus

• Lichen Simplex Chronicus

• Lipomas

• Listeria Infections

• Liver Cancer

• Liver Diseases & Disorders

• Liver Failure

• Lordosis

• Lou Gehrig's Disease - See Amyotrophic Lateral Sclerosis

• Low Back Pain - See Back Pain

• Low Blood Pressure

• Low Blood Sugar - See Hypoglycemia

• Lung Blood Clot - See Pulmonary Embolism

• Lung Cancer

• Lupus Erythematosus

• Lupus Nephritis

• Lyme Disease

• Lymphedema

• Lymphoma