The most complete medical information written by the best doctors


Nail diseases

Dermatology , Pathology, Paediatric surgery

What are nail diseases? Your nails can be an indicator of your general state of health, signalling problems and issues through discolouration and overall growth rate. Discolouration can be an indicator of kidney, heart and...

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Aesthetic medicine

What is Nanofat grafting? Nanofatgrafting is a minimally invasive procedure that counteracts the signs of ageing by regenerating the skin. To do this, a specialist will use liquified and filtered fat, which is rich in stem cells, from the patient’s own body.

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Neurology, Neurophysiology

What is narcolepsy? Narcolepsy is a neurological condition which affects your brain’s control over when you sleep. It’s a condition characterised by 'sleep attacks'during the day, where you suddenly fall asleep without control.

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Nasal cancer

Oral & maxillofacial surgery , Otolaryngology / ENT, Plastic surgery

What is nose and sinus cancer? Nose and sinus cancer is a type of head and neck cancer concentrated in the nasal passages and sinuses.

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Nasal deformity

Otolaryngology / ENT, Paediatric otolaryngology

What are nasal deformities? Nasal deformities are anomalies in the shape and/or function of the nose. They are relatively common and many are simply aesthetic issues that cause no symptoms, although many patients are unhappy with their appearance because of the shape of their nose. However, in some cases, nasal deformities can cause difficulty...

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Nasal endoscopy

Otolaryngology / ENT, Paediatric otolaryngology, Gastroenterology

What is a nasal endoscopy? A nasal endoscopy is a multifunctional exploratory procedure performed at the otorhinolaryngologist’s clinic to examine the nose, neck and larynx. It is carried out using a flexible fibre-optic instrument with a cold light source, a camera and a monitor. This allows for an easy and direct exploration of cavities in the body that...

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Nasal polyps

Otolaryngology / ENT, Allergy & immunology, Paediatric otolaryngology

What are nasal polyps? Nasal polyps are semi-transparent growths that can form in any part of the sino-nasal mucosa. These are benign, but they may grow to the extent that they obstruct the nasal cavities. This condition is also called polypoid sinusitis. The polyps can develop at...

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Nasal septal perforation

Otolaryngology / ENT, Paediatric otolaryngology

What is a perforated nasal septum? The nose has two cavities (nostrils) which are separated by a septum. This is made from both bone and cartilage and is responsible for separating the nasal cavities and channelling airflow into the nose. A perforated septum described when a hole develops in the...

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Nasal trauma

Otolaryngology / ENT, Paediatric otolaryngology

What is nasal trauma? Nasal trauma is an injury to the nose or it’s surrounding areas. They can be either internal or external and thanks to the position of your nose, the nasal bones, cartilage and tissue are particularly vulnerable to external injuries.

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Natriuretic peptides: BNP and NT-proBNP

Clinical analysis, Internal medicine

What is being analysed? Natriuretic peptides, including B-type natriuretic peptide (BNP) and N-terminal pro-B-type natriuretic peptide (NT-proBNP), are hormones produced by the heart in response to stretching of heart muscle cells (cardiomyocytes). These peptides play a crucial role in regulating blood volume and pressure, helping to maintain cardiovascular homeostasis.

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