Rhinorrhea

Rhinorrhea

"Rhinorrhea" is not a rhinoceros. Rhinorrhea is commonly referred to as runny nose, consists of a significant amount of nasal fluid. It is a symptom of the common cold and of allergies (hay fever). The term is a combination of the Greek words "rhinos" meaning "of the nose" and "-rrhea" meaning "discharge or flow".

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"Stuffy nose" is a term often used to refer to obstruction to the flow of air in and out of the nose. Both of these conditions are associated with inflammation and swelling (congestion) of the inner lining of the nasal passages and sinuses. A viral infection (the common cold) is the most common cause of a stuffy and/or runny nose, but allergies, influenza, and sinus infections also may cause these symptoms.

Less commonly, anatomical obstructions (e.g. a deviated nasal septum, foreign bodies) may lead to nasal congestion. Other causes of a stuffy or runny nose include environmental factors, hormonal changes, and some medications. Rarely, tumors of the nasal passages or chronic medical conditions may be the cause of a stuffy or runny nose.

CAUSES

Rhinorrhea may be due to allergic conditions such as hay fever or foreign materials within the nostril. Bacterial or viral infections such as the common cold, influenza or sinusitis may also be accompanied by a runny nose. Nasal discharges may also be present in cases of vasomotor, a non-infectious and non-allergenic condition.

Head injuries may also cause excess nasal discharges. Basilar skull fracture may result in cerebrospinal fluid rhinorrhea.

Environmental causes include contact with strong smelling substances such as disulphide compounds found in onions and garlic, both of the genus Allium. CS gas, which provides an especially intense pepper-like odor, also results in this symptom. This phenomenon is caused by the same mechanism that causes a runny nose when crying: tears drain through the inner corner through the nasolacrimal duct, and finally into the nasal cacity, where they manifest as a runny nose. Spicy food can also be to blame, as well as exposure to cold air, both of which can cause tearing.

Additional factors are temperature related: if the climate is dry or the air in one's vicinity becomes especially dry, the nose reacts by producing more mucus. The nose also tends to run when one is exposed to very cold temperatures; this is because air in the nose is warmer than outside air and a steam-like effect is brought on inside the nose; water drops then condense, mix with mucus, and run out of the nose.

Baby Colds, cough and flu

Every year a new round of viruses hits, and babies, with their untested immune systems, are prime targets. But there are plenty of ways to help babies avoid colds and the flu – and to make your baby more comfortable and happy if he develops a cough, congestion, or runny nose.

One reason that babies get a lot of colds is that their immune systems are immature, making them more vulnerable to illness. Also, your child can develop immunity to only one of the more than 200 different viruses that cause the common cold at a time. Think of all the colds you've had in your lifetime. Your baby would have to get all of those — and more — to be immune to all cold viruses.

Why does my baby get so many colds?

As your baby grows, he's likely to be exploring a lot and touching (and licking!) everything, so it's easy for him to pick up a cold virus on his hands. Then all he has to do is put his fingers in his mouth or nose or rub his eyes, and the virus will get a chance to set up shop.

Your baby may get sick more often during the fall and winter months because cold air and indoor heating dry out his nasal membranes, making it easier for a cold virus to get a foothold there. He also spends more time during cold weather cooped up indoors, where viruses can spread more easily from one person to another.

Most children average between six and ten colds per year. In families with children in daycare or school, the number of colds can reach 12 per year! (The average adult gets two to four colds annually.)

How can I tell if he has a cold and not the flu or some other illness, or even allergies?

It can be tricky. If your baby has a cold, he might have a runny nose with clear mucus that may thicken and turn gray or yellow or green over the next week or so. He might have a cough or a low-grade fever.

If your baby is running a fever, watch him when his fever comes down. If he plays and eats normally (or almost normally — he might eat a bit less and drag a little), then it's probably a cold. If he acts ill even when his temperature drops, though, he may have something more serious than a cold. Also, a flu or other illness is more likely to have an abrupt onset, and is more likely to be accompanied by diarrhoea or vomitting. On the other hand, if congestion or coughing shows up before any fever, it's more likely that your child has a cold.

Itchy, watery eyes and nose are hallmarks of an allergy, as are repeated sneezing attacks and itchy skin that lasts for weeks or months. Also, the mucus coming out of your baby's nose will continue to run clear, rather than thickening and turning yellow or green as it tends to in children with colds. Allergies won't cause your child to run a fever, and they tend to show up in the spring, summer, and early fall.

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