Archives: Conditions A-Z

Nephronophthisis

Commonest genetic cause of end-stage renal disease in children, a ciliopathy.

Netherton syndrome

Severe ichthyosiform disorder with hair-shaft defect and atopy.

Neuroblastoma

Embryonal tumor of the sympathetic nervous system, commonest extracranial solid tumor of childhood.

Neurofibromatosis type 1

A common tumour-predisposition syndrome; a targeted therapy is approved for symptomatic inoperable plexiform neurofibromas.

Noonan syndrome

A RAS-MAPK pathway disorder; care is multidisciplinary, with growth hormone used for short stature in selected children.

Neuromyelitis optica spectrum disorder

An autoimmune astrocytopathy distinct from multiple sclerosis; several targeted relapse-prevention therapies are approved.

Neurofibromatosis type 2

Schwannoma-predisposition with bilateral vestibular schwannomas, meningiomas and ependymomas.

Osteosarcoma

Commonest primary bone malignancy, peaking in adolescence.