The Gale Encyclopedia of Medicine

Nail fungus -- Nail-patella syndrome -- Nail removal -- Narcolepsy -- Narcotics -- Nasal irrigation -- Nasal packing -- Nasal papillomas -- Nasal polyps -- Nasal trauma -- Nasogastric (ng) tube -- Nasopharyngeal culture -- Naturopathic medicine -- Nausea and vomiting -- Necrotizing enterocolitis -- Neonatal abstinence syndrome -- Neonatal care -- Neonatal jaundice -- Nephrectomy -- Nephritis -- Nephrotic syndrome -- Nephrotoxic injury -- Neuralgia -- Neuroblastoma -- Neuroendocrine tumors -- Neurofibromatosis -- Neurogenic bladder -- Neurolinguistic programming -- Neurological exam -- Neuropsychological testing -- Neurosurgery -- Neutropenia -- Nicotine and related disorders -- Night terrors -- Nipah virus disease -- Nitrogen narcosis -- Nocardiosis -- Non-communicable diseases -- Non-nucleoside reverse transcriptase inhibitors -- Nongonococcal urethritis -- Nonsteroidal anti-inflammatory drugs -- Noroviruses -- Nosebleed -- Numbness and tingling -- Nutrition -- Nutrition and mental health -- Nutrition counseling -- Nutritional supplements -- Nystagmus -- Obesity -- Obesity and surgery -- Obsessive-compulsive disorder -- Obstetric and gynecologic surgery -- Obstetrical emergencies -- Occupational therapy -- Oil spills: health effects -- Oligomenorrhea -- Omega-3 and omega-6 fatty acids -- Onychomycosis -- Oophorectomy -- Ophthalmologic surgery -- Ophthalmoplegia -- Opioid epidemic -- Opioid-induced constipation (OIC) -- Opioid-related disorders -- Oppositional defiant disorder -- Optic atrophy -- Optic neuritis -- Oral contraceptives -- Oral hygiene -- Orbital and periorbital cellulitis -- Orchiopexy -- Orchitis -- Organ donation -- Organic food -- Orthodontics -- Orthopedic surgery -- Orthostatic hypotension -- Osteoarthritis -- Osteochondroses -- Osteogenesis imperfecta -- Osteomyelitis -- Osteopathy -- Osteopetroses -- Osteoporosis -- Ostomy -- Otitis externa -- Otitis media -- Otosclerosis -- Ototoxicity -- Outpatient surgery -- Ovarian cancer -- Ovarian cysts -- Ovarian torsion -- Overactive bladder -- Overhydration -- Oxygen therapy -- Pacemakers -- Paget's disease of bone -- Paget's disease of the breast -- Pain -- Pain management -- Paleo diet -- Palliative care -- Pallidotomy -- Palpitations -- Pancreas transplantation -- Pancreatectomy -- Pancreatic cancer, endocrine -- Pancreatic cancer, exocrine -- Pancreatitis -- Panic attack -- Panic disorder -- Pap test -- Papilledema -- Paracentesis -- Paralysis -- Paranoia -- Parathyroid hormone test -- Parathyroid scan -- Parathyroidectomy -- Paratyphoid fever -- Parentage testing -- Parenteral nutrition -- Parkinson's disease -- Parotidectomy -- Paroxysmal atrial tachycardia -- Parrot fever -- Partial thromboplastin time -- Paruresis -- Patau syndrome -- Patent ductus arteriosus -- Patient protection and affordable care act -- Pediatric surgery -- Pediatric leukemia -- Pellagra -- Pelvic exam -- Pelvic fracture -- Pelvic inflammatory disease -- Pelvic relaxation -- Pelvic ultrasound -- Penicillins -- Penile cancer -- Penile prostheses -- Percutaneous transhepatic cholangiography -- Perforated eardrum -- Perforated septum -- Pericardiocentesis -- Pericarditis -- Perinatal infection -- Periodic paralysis -- Periodontal disease -- Peripheral endarterectomy -- Peripheral neuropathy -- Peripheral vascular bypass surgery -- Peripheral vascular disease -- Peritonitis -- Pernicious anemia -- Peroxisomal disorders -- Personality disorders -- Pervasive developmental disorders -- Pet therapy -- Peyronie's disease -- Pharmacogenetics -- Phenylketonuria -- Pheochromocytoma -- Phimosis -- Phlebotomy -- Phobias -- Phosphorus imbalance -- Photodynamic therapy -- Photorefractive keratectomy (PRK) -- Photosensitivity -- Phototherapy -- Physical allergy -- Physical examination -- Physical therapy -- Physiology -- Pica -- Pickwickian syndrome -- Piercing and tattoos -- Pilates -- Pinguecula and pterygium -- Pinta -- Pituitary dwarfism -- Pituitary tumors -- Pityriasis rosea -- Placenta previa -- Placental abruption -- Plague -- Plasma renin activity -- Plasmapheresis -- Plastic, reconstructive, and cosmetic surgery -- Platelet aggregation test -- Platelet count -- Platelet function disorders -- Pleural biopsy -- Pleural effusion -- Pleurisy -- Pneumococcal pneumonia -- Pneumocystis pneumonia -- Pneumonectomy -- Pneumonia -- Pneumonia vaccine -- Pneumothorax -- Poison ivy and poison oak -- Poisoning -- Polio -- Polycystic kidney disease -- Polycystic ovary syndrome -- Polycythemia vera -- Polydactyly and syndactyly -- Polyglandular deficiency syndromes -- Polyhydramnios and oligohydramnios -- Polymyalgia rheumatica -- Polymyositis -- Polysomnography -- Porphyrias -- Portal vein bypass -- Positron emission tomography (PET) -- Post-concussion syndrome -- Postmenopausal bleeding -- Postpartum depression -- Postpolio syndrome -- Post-traumatic stress disorder -- Poverty -- Powassan disease -- Prader-Willi syndrome -- Precocious puberty -- Preeclampsia and eclampsia -- Pregnancy massage -- Premature ejaculation -- Premature labor -- Premature menopause -- Premature rupture of membranes -- Prematurity -- Premenstrual dysphoric disorder -- Premenstrual syndrome -- Prenatal surgery -- Preparing for surgery -- Prepregnancy counseling -- Presbyopia -- Priapism -- Prickly heat -- Primary biliary cirrhosis -- Probiotics -- Proctitis -- Progressive multifocal leukoencephalopathy -- Progressive supranuclear palsy -- Prolactin test -- Prolonged GT syndrome -- Prophylaxis -- Prostate-specific antigen test -- Prostate biopsy -- Prostate cancer -- Prostate ultrasound -- Prostatectomy -- Prostatitis -- Prosthetics -- Protease inhibitors -- Protein components test -- Protein electrophoresis -- Protein-energy malnutrition -- Prothrombin time -- Proton pump inhibitors -- Provenge (sipuleucel-T) -- Pseudogout -- Pseudomonas infections -- Pseudoxanthoma elasticum -- Psoriasis -- Psoriatic arthritis -- Psychoanalysis -- Psychological tests -- Psychological trauma -- Psychosis -- Psychosocial disorders -- Psychosurgery -- Psychotherapy -- Ptosis -- Puberty -- Public health -- Puerperal infection -- Pulmonary alveolar proteinosis -- Pulmonary artery catheterization -- Pulmonary edema -- Pulmonary embolism -- Pulmonary fibrosis -- Pulmonary function tests -- Pulmonary hypertension -- Pulmonary valve insufficiency -- Pulmonary valve stenosis -- Pyelonephritis -- Pyloric stenosis -- Pyloroplasty -- Pyruvate kinase deficiency.