

N | |
| Nabothian cyst | ADAM Health Illustrated Encyclopedia |
| Nail abnormalities | ADAM Health Illustrated Encyclopedia |
| Nail-patella syndrome - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Nail-Patella Syndrome - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Nail-Patella Syndrome - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Nail-Patella Syndrome - General Health | Gale Encyclopedia of Medicine |
| Naproxen sodium overdose | ADAM Health Illustrated Encyclopedia |
| Narcissism - Children and Adolescents | Gale Encyclopedia of Childhood and Adolescence |
| Narcissistic personality disorder | ADAM Health Illustrated Encyclopedia |
| Narcissistic personality disorder - Mental Health Encyclopedia | Gale Encyclopedia of Mental Disorders |
| Narcolepsy | ADAM Health Illustrated Encyclopedia |
| Narcolepsy - Alternative Medicine | Gale Encyclopedia of Alternative Medicine |
| Narcolepsy - Children and Adolescents | Gale Encyclopedia of Childhood and Adolescence |
| Narcolepsy - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Narcolepsy - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Narcolepsy - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Narcolepsy - General Health | Gale Encyclopedia of Medicine |
| Narcolepsy - Mental Health Encyclopedia | Gale Encyclopedia of Mental Disorders |
| Narcolepsy - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Nasal Cancer - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| Nasal Papillomas - General Health | Gale Encyclopedia of Medicine |
| Nasal polyps | ADAM Health Illustrated Encyclopedia |
| Nasal Polyps - General Health | Gale Encyclopedia of Medicine |
| Nasal Trauma - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Nasal Trauma - General Health | Gale Encyclopedia of Medicine |
| Nasopharyngeal Cancer - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| National High Blood Pressure Education Program - Public Health Encyclopedia | Gale Encyclopedia of Public Health |
| Natural short sleeper | ADAM Health Illustrated Encyclopedia |
| Near drowning | ADAM Health Illustrated Encyclopedia |
| Near-Drowning - General Health | Gale Encyclopedia of Medicine |
| Nearsightedness | ADAM Health Illustrated Encyclopedia |
| Necrosis | ADAM Health Illustrated Encyclopedia |
| Necrotizing enterocolitis | ADAM Health Illustrated Encyclopedia |
| Necrotizing Enterocolitis - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Necrotizing Enterocolitis - General Health | Gale Encyclopedia of Medicine |
| Necrotizing granuloma | ADAM Health Illustrated Encyclopedia |
| Necrotizing soft tissue infection | ADAM Health Illustrated Encyclopedia |
| Necrotizing vasculitis | ADAM Health Illustrated Encyclopedia |
| Needlestick - Public Health Encyclopedia | Gale Encyclopedia of Public Health |
| Negative symptoms - Mental Health Encyclopedia | Gale Encyclopedia of Mental Disorders |
| Neonatal conjunctivitis | ADAM Health Illustrated Encyclopedia |
| Neonatal hypothyroidism | ADAM Health Illustrated Encyclopedia |
| Neonatal Jaundice - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Neonatal Jaundice - General Health | Gale Encyclopedia of Medicine |
| Neonatal Jaundice - Nursing Encyclopedia | Gale Encyclopedia of Nursing and Allied Health |
| Neonatal respiratory distress syndrome | ADAM Health Illustrated Encyclopedia |
| Neonatal sepsis | ADAM Health Illustrated Encyclopedia |
| Nephritis - General Health | Gale Encyclopedia of Medicine |
| Nephrocalcinosis | ADAM Health Illustrated Encyclopedia |
| Nephrogenic diabetes insipidus - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Nephrogenic Diabetes Insipidus - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Nephrotic syndrome | ADAM Health Illustrated Encyclopedia |
| Nephrotic Syndrome - General Health | Gale Encyclopedia of Medicine |
| Nephrotoxic Injury - General Health | Gale Encyclopedia of Medicine |
| Nerve Compression - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Neu-Laxova syndrome - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Neu-Laxova Syndrome - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Neural Tube Defect - Nursing Encyclopedia | Gale Encyclopedia of Nursing and Allied Health |
| Neural tube defects - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Neural Tube Defects - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Neuraminidase deficiency - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Neuraminidase Deficiency - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Neuraminidase deficiency with beta-galactosidase deficiency - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Neuraminidase Deficiency with Beta-Galactosidase Deficiency - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Neuroblastoma | ADAM Health Illustrated Encyclopedia |
| Neuroblastoma - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| Neuroblastoma - General Health | Gale Encyclopedia of Medicine |
| Neuroendocrine Tumors - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| Neuroendocrine Tumors - General Health | Gale Encyclopedia of Medicine |
| Neurofibromatosis - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Neurofibromatosis - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Neurofibromatosis - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Neurofibromatosis - General Health | Gale Encyclopedia of Medicine |
| Neurofibromatosis - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Neurofibromatosis 2 | ADAM Health Illustrated Encyclopedia |
| Neurofibromatosis-1 | ADAM Health Illustrated Encyclopedia |
| Neurogenic bladder | ADAM Health Illustrated Encyclopedia |
| Neurogenic Bladder - General Health | Gale Encyclopedia of Medicine |
| Neuroleptic Malignant Syndrome - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Neuronal ceroid lipofuscinoses (NCLS) | ADAM Health Illustrated Encyclopedia |
| Neuronal Migration Disorders - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Neuropathy - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| Neuropathy secondary to drugs | ADAM Health Illustrated Encyclopedia |
| Neuroretinitis | ADAM Health Illustrated Encyclopedia |
| Neurosarcoidosis | ADAM Health Illustrated Encyclopedia |
| Neurosarcoidosis - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Neurosis - Mental Health Encyclopedia | Gale Encyclopedia of Mental Disorders |
| Neurosyphilis | ADAM Health Illustrated Encyclopedia |
| Neutropenia - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| Neutropenia - General Health | Gale Encyclopedia of Medicine |
| Neutropenia - infants | ADAM Health Illustrated Encyclopedia |
| Nevoid Basal Cell Carcinoma - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Newborn jaundice | ADAM Health Illustrated Encyclopedia |
| Nicotine and related disorders - Mental Health Encyclopedia | Gale Encyclopedia of Mental Disorders |
| Nicotine withdrawal | ADAM Health Illustrated Encyclopedia |
| Niemann-Pick disease | ADAM Health Illustrated Encyclopedia |
| Niemann-Pick disease - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Niemann-Pick Disease - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Niemann-Pick Disease - Neurological Encyclopedia | Gale Encyclopedia of Neurological Disorders |
| Night Blindness - Alternative Medicine | Gale Encyclopedia of Alternative Medicine |
| Night terror | ADAM Health Illustrated Encyclopedia |
| Night Terrors - Children and Adolescents | Gale Encyclopedia of Childhood and Adolescence |
| Night Terrors - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Night Terrors - General Health | Gale Encyclopedia of Medicine |
| Nightmare disorder - Mental Health Encyclopedia | Gale Encyclopedia of Mental Disorders |
| Nightmares | ADAM Health Illustrated Encyclopedia |
| Nightmares - Children and Adolescents | Gale Encyclopedia of Childhood and Adolescence |
| Nightmares - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Nijmegen breakage syndrome - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Nijmegen Breakage Syndrome - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Nitrogen Narcosis - General Health | Gale Encyclopedia of Medicine |
| Nocardia infection | ADAM Health Illustrated Encyclopedia |
| Nocardiosis - General Health | Gale Encyclopedia of Medicine |
| Nodules | ADAM Health Illustrated Encyclopedia |
| Noma | ADAM Health Illustrated Encyclopedia |
| Non-Hodgkin's lymphoma | ADAM Health Illustrated Encyclopedia |
| Non-Hodgkin's Lymphoma - Cancer Encyclopedia | Gale Encyclopedia of Cancer |
| Nongonococcal Urethritis - General Health | Gale Encyclopedia of Medicine |
| Noonan syndrome | ADAM Health Illustrated Encyclopedia |
| Noonan syndrome - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Noonan Syndrome - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Normal pressure hydrocephalus (NPH) | ADAM Health Illustrated Encyclopedia |
| Norrie disease - Genetic Encyclopedia I | Gale Encyclopedia of Genetic Disorders Part I |
| Norrie Disease - Genetic Encyclopedia II | Gale Encyclopedia of Genetic Disorders Part II |
| Nose fracture | ADAM Health Illustrated Encyclopedia |
| Nosebleed - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Nosebleed - General Health | Gale Encyclopedia of Medicine |
| Nosebleed | ADAM Health Illustrated Encyclopedia |
| Nosebleeds - Alternative Medicine | Gale Encyclopedia of Alternative Medicine |
| Nosocomial Infections - Public Health Encyclopedia | Gale Encyclopedia of Public Health |
| Nummular eczema | ADAM Health Illustrated Encyclopedia |
| Nursemaid's elbow | ADAM Health Illustrated Encyclopedia |
| Nursemaid's Elbow - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Nutrient-Drug Interactions - Nutrition Encyclopedia | Gale Nutrition and Well-Being A to Z |
| Nutritional Deficiency - Nutrition Encyclopedia | Gale Nutrition and Well-Being A to Z |
| Nystagmus | ADAM Health Illustrated Encyclopedia |
| Nystagmus - Children's Encyclopedia | Gale Encyclopedia of Children's Health |
| Nystagmus - General Health | Gale Encyclopedia of Medicine |