Conditions

Narcolepsy is a rare long-term brain condition that can prevent a person from choosing when to wake or sleep.

Nasal and sinus cancer is a rare cancer that starts in the space behind your nose (nasal cavity) or in your sinuses.

Nasal polyps are painless soft growths inside your nose. They're not usually serious, but they can keep growing and block your nose if not treated.

Nasopharyngeal cancer is a rare type of cancer that affects the part of the throat connecting the back of the nose to the back of the mouth (the pharynx).

Necrotising fasciitis, also known as the "flesh-eating disease", is a rare and life-threatening infection that can happen if a wound gets infected. It needs to be treated in hospital straight away.

Neonatal herpes is a herpes infection in a young baby. The younger the baby, the more vulnerable they are to the harmful effects of infection.

Nephrotic syndrome is a condition that causes the kidneys to leak large amounts of protein into the urine. This can lead to a range of problems, including swelling of body tissues and a greater chance of catching infections.

Neurofibromatosis type 1 (NF1) is a genetic condition where tumours grow on the nerves and skin. There’s currently no cure, but treatment can help manage your symptoms.

Neurofibromatosis type 2 (NF2), also known as NF2-related schwannomatosis, is a rare genetic condition where non-cancerous tumours grow on nerves in your brain, inner ear and spinal cord. There’s currently no cure, but treatment can help manage your symptoms.

Neuromyelitis optica (NMO) is a rare autoimmune condition that affects the nerves in your eyes and spinal cord. There's no cure, but treatments can help manage the symptoms.