This is a list of diseases starting with the letter "N".
DiseasesAlphabetical list
N–Nas
- N acetyltransferase deficiency
- N syndrome
- N-Acetylglutamate synthase deficiency
- N-acetyl-alpha-D-galactosaminidase
- N-acetyl-glucosamine-6-sulfate sulfatase deficiency
- NADH CoQ reductase, deficiency of
- NADH cytochrome B5 reductase deficiency
- Naegeli–Franceschetti–Jadassohn syndrome
- Naguib syndrome
- Nail–patella syndrome
- Nakajo–Nishimura syndrome
- Nakajo syndrome
- Nakamura–Osame syndrome
- NAME syndrome
- Nance–Horan syndrome
- Nanism due to growth hormone combined deficiency
- Nanism due to growth hormone isolated deficiency with X-linked hypogammaglobulinemia
- Nanism due to growth hormone resistance
- Narcissistic personality disorder
- Narcolepsy
- Narrow oral fissure short stature cone shaped epiphyses
- Nasodigitoacoustic syndrome
- Nasopalpebral lipoma coloboma syndrome
- Nasopharyngeal carcinoma
- Nasopharyngeal teratoma Dandy–Walker diaphragmatic hernia
- Nasopharyngitis
Nat–Nav
- Natal teeth intestinal pseudoobstruction patent ductus
- Nathalie syndrome
- Native American myopathy
- Navajo poikiloderma
- Naxos disease
Ne
Nec–Neo
- Necrotizing encephalopathy, infantile subacute
- Necrotizing fasciitis
- Negative rheumatoid factor polyarthritis
- Neisseria meningitidis
- Nelson syndrome
- Nemaline myopathy
- Neonatal diabetes mellitus
- Neonatal hemochromatosis
- Neonatal hepatitis
- Neonatal infection
- Neonatal herpes
- Neonatal ovarian cyst
- Neonatal transient jaundice
Nep–Net
- Nephroblastomatosis, fetal ascites, macrosomia and Wilms' tumor
- Nephrocalcinosis
- Nephrogenic diabetes insipidus
- Nephrolithiasis type 2
- Nephronophthisis familial adult spastic qriparesis
- Nephropathy deafness hyperparathyroidism
- Nephropathy familial with hyperuricemia
- Nephropathy, familial with gout
- Nephrosclerosis
- Nephrosis deafness urinary tract digital malformation
- Nephrosis neuronal dysmigration syndrome
- Nephrotic syndrome
- Nephrotic syndrome ocular anomalies
- Nephrotic syndrome, idiopathic, steroid-resistant
- Nerve sheath neoplasm
- Nesidioblastosis of pancreas
- Netherton syndrome ichthyosis
Neu
Neuh
Neur
Neura–Neuri
- Neural crest tumor
- Neural tube defect, folate-sensitive
- Neural tube defects X linked
- Neuraminidase beta-galactosidase deficiency
- Neuraminidase deficiency
- Neurasthenia
- Neurilemmomatosis
- Neuritis with brachial predilection
Neuro
Neuroa–Neurog
- Neuroacanthocytosis
- Neuroaxonal dystrophy renal tubular acidosis
- Neuroaxonal dystrophy, late infantile
- Neuroblastoma
- Neurocutaneous melanosis
- Neurocysticercosis
- Neuroectodermal endocrine syndrome
- Neuroectodermal tumors primitive
- Neuroendocrine cancer
- Neuroendocrine carcinoma of the cervix
- Neuroendocrine tumor
- Neuroepithelioma
- Neurofaciodigitorenal syndrome
- Neurofibrillary tangles
- Neurofibroma
- Neurofibromatosis
Neurol–Neurot
- Neuroleptic malignant syndrome
- Neuroma biliary tract
- Neuromyotonia
- Neuronal ceroid lipofuscinosis
- Neuronal heterotopia
- Neuronal interstitial dysplasia
- Neuronal intestinal pseudoobstruction
- Neuronal intranuclear hyaline inclusion disease
- Neuronal intranuclear inclusion disease
- Neuropathy ataxia and retinis pigmentosa
- Neuropathy congenital sensory neurotrophic keratitis
- Neuropathy hereditary with liability to pressure palsies
- Neuropathy motor sensory type 2 deafness mental retardation
- Neuropathy sensory spastic paraplegia
- Neuropathy, hereditary motor and sensory, LOM type
- Neuropathy, hereditary sensory, type I
- Neuropathy, hereditary sensory, type II
- Neurosyphilis
- Neurotoxicity syndromes
Neut
- Neutral lipid storage myopathy
- Neutropenia intermittent
- Neutropenia monocytopenia deafness
- Neutropenia, severe chronic
Nev–Nez
- Nevi flammei, familial multiple
- Nevo syndrome
- Nevoid basal cell carcinoma syndrome
- Nevus of ota retinitis pigmentosa
- Nevus sebaceus of Jadassohn
- Nezelof syndrome
Ni–Nm
- Nijmegen breakage syndrome
- Nivelon–Nivelon–Mabille syndrome
- NMDA receptor antagonist neurotoxicity (NAN)
No
Nob–Nor
- Noble–Bass–Sherman syndrome
- Nocardiosis
- Noise-induced hearing loss
- Noma
- Non-24-hour sleep–wake disorder
- Non functioning pancreatic endocrine tumor
- Nonallergic atopic dermatitis
- Non-Hodgkin lymphoma
- Noninsulin-dependent diabetes mellitus with deafness
- Nonketotic hyperglycinemia
- Non-lissencephalic cortical dysplasia
- Nonmedullary thyroid carcinoma, with cell oxyphilia
- Nonne–Milroy disease
- Non-small cell lung cancer
- Nonsyndromic hereditary hearing impairment
- Nonvenereal endemic syphilis
- Nonverbal learning disorder
- Noonan like syndrome
- Noonan syndrome
- Norman–Roberts lissencephaly syndrome
- Normokalemic periodic paralysis
- Norrie disease
- Northern epilepsy syndrome
- Norum disease