• Nail patella syndrome

• Nail problems

• Nappy rash

• Narcolepsy

• Nasal and sinus cancer

• Nasal polyps

• Nasopharyngeal cancer

• Neck pain

• Necrotising fasciitis

• Neonatal herpes (herpes in a baby)

• Nephrotic syndrome in children

• Neuroblastoma

• Neuroendocrine tumours

• Neuroendocrine tumours and carcinoid syndrome

• Neurofibromatosis type 1

• Neurofibromatosis type 2

• Neuromyelitis optica

• Newborn jaundice

• Newborn respiratory distress syndrome

• NHS screening

• Night sweats

• Night terrors and nightmares

• Nipple discharge

• Noise sensitivity (hyperacusis)

• Non-alcoholic fatty liver disease (NAFLD)

• Non-allergic rhinitis

• Non-Hodgkin lymphoma

• Noonan syndrome

• Norovirus (vomiting bug)

• Nosebleed

• NSAIDs