Hay Fever
Hay fever or allergic rhinitis is an inflammation of the nasal passage causing nasal congestion, sneezing and running nose. It is not the same as sinusitis and is not caused by virus. It is caused by allergens such as dust and pollen, which increase in levels during spring or the flowering season. It is called perennial allergic rhinitis if it persists throughout the year. People with lower immunity such as children and elderly are more prone to allergies due to hay fever. Ca