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Sinus is the dilated channel in the skull bone connecting to the nostril containing venous blood chiefly and air. The term sinus is derived from a Latin word meaning curve or hollow space in the body. In human being the sinus is the mucus lined hollow spaces in the facial bones, connected to the nose through passageways that assist in moistening and warming the inhaled air.

In plants sinus is the indentation or notch between the lobes in the corolla of the flower or leaves. Whereas in non-chordates it is the hole between viscera and muscles through which blood flows back to the heart. The term sinus is used to signify different structure in different organisms including dilated portion of the blood vein in braincase, alternate name of the hemocoel, nostril etc. whereas sinus is different from fistula that is the connecting link between two epithelial facades.

The pathological troubles arise in the sinus when its passageways are blocked due to certain factors like allergy or cold, and the condition is termed as sinusitis. There mucus got accumulated due to the blockage of its passage leading to the general discomforts like headache, pain, pressure etc. and this accumulated mucus becomes the breeding ground of bacteria.

Sinusitis is the constant devastating sinus infection for which proper care must be taken. Nostril is an important organ for respiration and breathing in the body which get trouble due to sinus infections including the inflammation of adjoining facial cavities of the nose especially frontal, sphenoid, ethmoid, maxillary etc. The signs and symptoms of sinus infection accompanies with facial pain, headache, fever, nasal congestion, yellow or green nasal discharges, heavy feeling on the face etc. and this may also be due to certain structural problems like diverged nasal polyps, septum.

There are different ways of treating sinus infection including preventive measures, treatment on diagnosis. Nasal irrigation, steam inhalation, drinking hot fluids like hot tea, water, coffee, chicken soup are common treating ways that can be done along with daily activities. Medication like paracetamol, aspirin like decongestants are also generally recommended for treating sinus infections. But when the symptoms are serious and last for longer than 48 hours then consulting ENT specialist is must and generally doctors prescribed for nasal steroids or antibiotics.

People must get the sinus infections treated immediately as untreated sinusitis may lead to pneumonia, bronchitis like respiratory problems in near future. Preventive measures are the best ways of treating sinus infections than curing and must restrict smoking as it is main stimulant for sinusitis. Test for allergy must be done for preventing sinus infections from different allergic agents and maintenance of immunological consistency is a must. Surgery is another effective and common treatment of sinus infections that mainly preferred for chronic infections. Thus sinus is such a health trouble comprising of irritating and agonizing persistence and immediate diagnosis and treatment is of much importance.