Conditions beginning with the letter "L"

  | Labyrinthitis (Neuronitis, Ear Disorder, Inner Ear Inflammation) |
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  | Lack of Sexual Desire in Women (Female Sexual Dysfunction, Low Libido in Women, Decreased Sex Drive - Female, Sexual Dissatisfaction in Women) |
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  | Laryngeal Cancer (Cancer of the Larynx, Vocal Cord Cancer, Cancer of the Glottis, Throat Cancer) |
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  | Laryngitis (Voice Loss, Hoarseness) |
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  | Lateral Epicondylitis (Tennis Elbow) |
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  | Leg Veins (Varicose Veins, Bulging Veins, Spiderweb Veins) |
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  | Legionella (Legionnaires' Disease, Legionellosis) |
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  | Legionellosis (Legionnaires' Disease, Legionella) |
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  | Legionnaires' Disease (Legionella, Legionellosis) |
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  | Leukemia (Blood Cancers, Blood Disorders) |
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  | Lice (Head Lice, Pediculosis) |
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  | Limb-girdle Muscular Dystrophies (Muscular Dystrophy, Duchenne Muscular Dystrophy, Becker's Muscular Dystrophy, Facioscapulohumeral Muscular Dystrophy) |
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  | Listeria Infection (Listeriosis) |
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  | Listeriosis (Listeria Infection) |
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  | Litter Box Disease (Toxoplasmosis, Protozoan Infection) |
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  | Little's Disease (Cerebral Palsy, CP) |
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  | Liver Cancer (Cancer of the Liver, Hepatic Cancer) |
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  | Liver Disease (Liver Disorders) |
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  | Liver Disorders (Liver Disease) |
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  | Lock Jaw (Tetanus, Lockjaw, Clostridium tetani) |
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  | Lockjaw (Tetanus, Lock Jaw, Clostridium tetani) |
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  | Long Term Pain (Chronic Pain, Pain) |
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  | Loose Stools (Diarrhea, Runs) |
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  | Loss of Bladder Control (Urinary Incontinence, Bladder Control Problems, Incontinence) |
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  | Loss of Skin Pigmentation (Vitiligo, Depigmentation, Skin Discolouring) |
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  | Lou Gehrig's Disease (ALS, Amyotrophic Lateral Sclerosis) |
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  | Low Back Pain (Low Backache, Pain in Lower Back) |
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  | Low Backache (Low Back Pain, Pain in Lower Back) |
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  | Low Blood Glucose (Hypoglycemia, Low Blood Sugar) |
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  | Low Blood Sugar (Hypoglycemia, Low Blood Glucose) |
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  | Low Body Fluids (Dehydration) |
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  | Low Body Temperature (Hypothermia and Frostbite) |
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  | Low Libido in Women (Female Sexual Dysfunction, Decreased Sex Drive - Female, Sexual Dissatisfaction in Women, Lack of Sexual Desire in Women) |
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  | Low Sex Drive - Male (Erectile Difficulties, Impotence, Erectile Dysfunction, Decreased Libido in Men) |
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  | Low Testosterone (Andropause, Male Menopause, Manopause, Testosterone Deficiency) |
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  | Low Thyroid (Hypothyroidism, Thyroid Problems, Underactive Thyroid) |
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  | Lumpy Breasts (Fibrocystic Breast Disease, Breast Disease - Benign, Mammary Dysplasia, Chronic Cystic Mastitis) |
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  | Lung Cancer (Pulmonary Cancer, Cancer of the Lung) |
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  | Lung Disease (Emphysema) |
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  | Lung Infection (Pneumonia, Respiratory Infection, Chest Infection) |
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  | Lupus (SLE, Systemic Lupus Erythematosus) |
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  | Lyme Disease (Tick Bites) |
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  | Lymph Cancer (Non-Hodgkin's Lymphoma) |
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  | Lymph Node Disease (Kawasaki Disease, KD, Kawasaki Syndrome) |
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  | Lymphoma (Hodgkin's Disease, Cancer of the Lymphatic System) |
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