A mumps outbreak has occured in the West of Ireland, according to the HSE.
This follows a significant number of people being diagnosed with the condition over the last few weeks.
Mumps is an acute viral illness that causes fever, headache and painful swollen salivary glands.
In the HSE's western region, 45 people between the ages of 15 and 19 have been affected.
Mumps is spread from person to person by coughs and sneezes.
It can also be transmitted through direct contact with saliva.
People are usuallyunwell for an average of 7 – 10 days.
Complications can include meningitis and inflammation of the testicles, which can affect fertility in later life. Less common complications can include inflammation of the pancreas, deafness, arthritis, and inflammation of the heart.
Treatment for mumps is focused on symptom relief with rest, fluids, and over-the-counter painkillers advised.
For best protection from the viral illness, the HSE is urging those who are unsure if they have received two doses of the MMR vaccination to check.
Here are the most common symptoms of mumps to look out for:
- Discomfort in the salivary glands (in the front of the neck) or the parotid glands (immediately in front of the ears). Either of these glands may become swollen and tender.
- Difficulty chewing
- Pain and tenderness of the testicles
- Fever
- Headache
- Muscle aches
- Tiredness
- Loss of appetite
To prevent further infections with mumps, people are advised to stay away from school, college, or work for five days following the onset of their symptoms.