Glossary - N


Nausea is an uncomfortable or unsettled sensation in the abdomen, that can be associated with an urge to vomit. This feeling can have a variety of causes including overindulgence, indigestion, infection, motion sickness and even psychological factors.   

Necrotising Enterocolitis

Necrotising enterocolitis is a condition occurring when part of the intestine is swollen or inflamed due to damage of the lining, often due to obstructed blood or oxygen flow during the perinatal period. Necrotising enterocolitis is the most common gastrointestinal surgical emergency in premature babies.


Neurotransmitters are endogenous chemicals involved in transmitting signals across synapses between neurons within the nervous system.


The nocebo effect is where an inert substance has a detrimental effect on human health. These are thought to be due to psychological or psychosomatic factors, which trigger actual biological reactions.

Nosocomial Diarrhoea

Nosocomial diarrhoea is diarrhoea occurring due to an infection acquired in hospital. Nosocomial diarrhoea is specifically not present prior to the patient's admittance to hospital, but occurs within 72 hours of being in hospital. C. difficile is recognised as the biggest cause of nosocomial diarrhoea.


This acronym refers to non-steroidal anti-inflammatory drugs which are a class of pharmaceuticals that are prescribed for their pain- relieving and anti- inflammatory effects. Examples include aspirin and ibuprofen and these drugs are often used for conditions such as arthritis, headaches and period pain. A range of side effects are associated with their use such as nausea and gastric ulceration.