Nabothian Cyst
Nager Syndrome
Nail Clubbing
Nail Infection (Paronychia)
Nail Psoriasis
Narcissistic Personality Disorder
Narcolepsy
Narcolepsy in Children
Nasal and Paranasal Tumors
Nasal Congestion
Nasal Polyps
Nasal Valve Collapse
Nasal Vestibulitis
Nasolabial Folds (Smile Lines)
Nasopharyngeal Cancer
Nausea & Vomiting
Neck Pain
Neck Spasms
Necrosis
Necrotizing Enterocolitis (NEC)
Necrotizing Fasciitis (Flesh-Eating Disease)
Necrotizing Pancreatitis
Nemaline Myopathy
Neonatal Lupus
Neonatal Opioid Withdrawal Syndrome (formerly known as Neonatal Abstinence Syndrome)
Neovascularization of The Eye
Nephrogenic Diabetes Insipidus
Nephrogenic Systemic Fibrosis
Nephrotic Syndrome
Nerve Compression Syndromes
Nerve Sheath Tumors
Nervous Breakdown
Neural Tube Defects (NTD)
Neuroblastoma
Neurodegenerative Diseases
Neurodermatitis
Neurodivergence
Neuroendocrine Tumors
Neurofibroma
Neurofibromatosis
Neurofibromatosis Type 1 (NF1)
Neurofibromatosis Type 2 (NF2)
Neurogenic Bladder
Neurogenic Shock
Neuroleptic Malignant Syndrome
Neuromuscular Disorders
Neuromyelitis Optica (NMO)
Neuropathic Pain
Neuropraxia
Neurosyphilis
Neutropenia
Neutrophilia
New Daily Persistent Headache (NDPH)
Nickel Allergy
Nicotine Dependence (Tobacco Use Disorder)
Nicotine Headache
Nicotine Poisoning
Nicotine Withdrawal
Niemann-Pick Disease (NP)
Night Blindness (Nyctalopia)
Night Eating Syndrome (NES)
Night Sweats
Nightmare Disorder
Nightmares in Children
Nipah Virus
Nipple Discharge
Nipple Fissure
Nitrite-Positive Urine
Nocturia
Nocturnal Panic Attacks
Nodular Acne
Nodular Fasciitis
Nodular Melanoma
Noise-Induced Hearing Loss (NIHL)
Noncardiac Chest Pain
Nongonococcal Urethritis
Non-Hodgkin Lymphoma
Non-Neurogenic Voiding Dysfunction
Non-Ossifying Fibroma
Non-Small Cell Lung Cancer
Nonspecific Interstitial Pneumonia (NSIP)
Nontuberculous Mycobacteria Infections
Noonan Syndrome
Normal Pressure Hydrocephalus (NPH)
Normocytic Anemia
Norovirus
Norrie Disease
Nosebleed (Epistaxis)
Nosocomephobia (Fear of Hospitals)
Nosocomial Infections (Healthcare-Associated Infections)
Nosophobia (Fear of Disease)
Notalgia Paresthetica
NSAIDs (Nonsteroidal Anti-Inflammatory Drugs)
NSTEMI: Non-ST-Elevation Myocardial Infarction (Heart Attack)
NTM Lung Disease
Numbness
Numbness in Hands
Nummular Eczema
Nursemaid Elbow
NUT Carcinoma
Nutcracker Syndrome
Nyctophobia (Fear of the Dark)
Nystagmus