Nasal cavity can roughly be thought of as a bony pear-shaped tunnel. The center of the tunnel is separated by the nasal septum that divides it into two halves. The lateral walls of the nasal cavity have bony protrusions called nasal turbinates – that represent special kind (sort) of osseous based mucosal covered folds. There are inferior (А), middle (В), and superior (С) turbinates.  
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The mucosal layer covering the turbinates contains a very large vascular network, that is cavernous vascular plexuses. Vascular system supports active blood circulation and healthy temperature regulation similar to the home heating system. Therefore, when the air moves through nasal cavities it is cleaned and purified
That is why as the inhaled air moves through the narrow spaces of the nasal cavity it is warmed and humidified by the vascular tissue. The temperature and humidity of the air that we breathe in varies a lot depending on the season. Although in any case (any time of the year) the exhaled air temperature rises in the range of 28 – 30 C0
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Thermogram of respiratory passageways..
The inhaled air is instantly warmed up to 30 C.
This effect is achieved by means of complex nerve-reflex mechanism. Blood vessels of cavernous tissue plexuses have soft walls that contain muscle fibers. These fibers form the vessels ability to expand and contract. Therefore a human organism automatically regulates the air heat rate depending on the environmental temperature. So when a person is having a walk on a frosty day inhaling cold air, the cavernous tissue plexuses reflexively dilate.
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The normal tone of inferior turbinate vascular plexuses (A) and their dilated condition (B).
 
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The same case, endoscopic image * - frond end of the inferior turbinate. Arrow shows the air passage. Pay your attention to how the expanded inferior turbinate can constrict the airway and obstruct nasal breathing!
The result of the intensified turbinates blood circulation, is a considerable increase of thermo exchange. As long as the mucous membrane becomes (grows) thicker, caused by the increased blood flow, the nasal airflow slows down, thus blocking the nose and decreasing the breathing performance. Therefore the exiting air stream is enough warmed up and humidified to get the temperature range between 28-30 C. That is the function of the nose created by nature to work like a natural air conditioner by filtering the air before it enters our lungs. When the nose stops working, the strain on the lungs function increases. Therefore the bronchus mucous lining together with air cells “wear out” faster what can lead to the chronic inflammation.
Vasomotor Rhinitis causes the nasal linings (mucus membranes) to swell and blood vessels excessively dilate.
"Vasomotor" means blood vessel forces. The membranes of the nose have an abundant supply of arteries, veins, and capillaries, which have a great capacity for both expansion and constriction.
This kind of nasal obstruction has a number of causes. In fact any somatic disease or a condition associated with the abnormal functioning of blood vessels leads to the symptoms of vasomotor rhinitis. Among the known causes there are: vegetative-vascular dystonia (vasoneurosis), low blood pressure, a large spectrum of endocrine disorders, pregnancy, antihypertensive medications, oral contraceptives, frequent and uncontrolled use of such vasoconstrictive nasal drops like Naftizin, Galazolin, Farmazolin, Nok-Spray etc., septal deviation, allergy and so on.
Patients suffering from the vasomotor rhinitis complain about constant or intermittent nasal breath obstruction, occasional large amount of clear mucous secretions. As a rule their conditions get worse in supine position what is related to the redistribution of blood in the body which aggravates the nasal lining swelling.
Diagnostics:
The cases of suspected Vasomotor Rhinitis require correct diagnosis using endoscopic exam and x-ray studies in order to get a detailed image of the anatomical nasal structures that can not be evaluated at a regular check-up.
The next step is the functional adrenal test which is performed in the course of nasal breathing examination using a special instrument called Rhinomanometer. Nowadays this is the only objective method to determine the degree of the nasal airway obstruction.
Whenever it is considered necessary we invite allied medical specialists like therapists, cardiologists, gynecologists who can help to identify the possible core reason of the disease.
Treatment:
As long as the problem of vasomotor rhinitis is rather a widely spread one, the treatment option is chosen individually for each patient. Some percentage of patients whose vasomotor disorder is of somatic origin can have their conditions improved after treating the underlying disease. Although unfortunately the primary cause of the health problems can not always be cured, most of patients get surgical treatment like: submucosal vasotomy combined with bipolar coagulation of turbinates mucous lining. The surgery is aimed directly at the substrate of the disease that is cavernous mucous plexuses. In the course of the surgery a certain part of blood vessels is coagulated with high frequency electric current. As a result the vessels are substituted with connective tissue. This is a minimally invasive type of surgery and is performed using either general or local anesthesia. The surgery time is around 15 min.
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Before and after operation. Diagram.
Ultrasound nasal turbinate disintegration is a method that was used to treat Vasomotor Rhinitis previously. I do not practice this method due to its low effectiveness although it is still used in many clinics.
Vasomotor Rhinitis is very often associated with partial hypertrophy of the inferior and middle turbinates. In such cases it is useful to perform endoscopic turbinoplasty.
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