Enter any Number into this free calculator. How it works: Just type numbers into the boxes below and the calculator will automatically calculate the distance between those 2 points. How to enter numbers: Enter any integer, decimal or fraction. Fractions should be entered with a forward such as '3/4' for the fraction $$ \frac{3}{4} $$.
The most common causes of chronic nasal congestion are allergic rhinitis, from environmental allergens or irritants, and chronic rhinosinusitis. Chronic rhinosinusitis is defined as a sinus infection of greater than 12 weeks' duration that includes 2 or more major sinus symptoms or at least 1 major and 2 minor symptoms. Major symptoms include:
The inner lining of the nose consists of mucus membrane that contains mucus-secreting glands. Mucus is a thin secretion made up of water, antibodies and proteins. The mucus helps to keep the nasal passages moist and prevent dust or infective particles suspended in the air from reaching the lungs. In some conditions, the mucus production increases and manifests in the form of a running nose.