2007-04-01 06:02:00 · 4 answers · asked by Anonymous in Health ➔ Other - Health
The reasons vary..."Rhinitis" means inflammation of the nose and nasal membranes. "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. Normally these blood vessels are in a half-constricted, half-open state. But when a person exercises vigorously, his/her hormones of stimulation (i.e., adrenaline) increase. The adrenaline causes constriction or squeezing of the nasal membranes so that the air passages open up and the person breathes more freely.
The opposite takes place when an allergic attack or a ''cold'' develops: The blood vessels expand, the membranes become congested (full of excess blood), and the nose becomes stuffy, or blocked.
In addition to allergies and infections, other events can also cause nasal blood vessels to expand, leading to vasomotor rhinitis. These include psychological stress, inadequate thyroid function, pregnancy, certain anti-high blood pressure drugs, and overuse or prolonged use of decongesting nasal sprays and irritants such as perfumes and tobacco smoke.
In the early stages of each of these disorders, the nasal stuffiness is temporary and reversible. That is, it will improve if the primary cause is corrected. However, if the condition persists for a long enough period, the blood vessels lose their capacity to constrict. They become somewhat like varicose veins. They fill up when the patient lies down and when he/she lies on one side, the lower side becomes congested. The congestion often interferes with sleep. So it is helpful for stuffy patients to sleep with the head of the bed elevated two to four inches accomplish this by placing a brick or two under each castor of the bedposts at the head of the bed.
2007-04-01 06:47:35 · answer #1 · answered by Fraulein 7 · 3⤊ 0⤋
The sinuses swell up (owing to an allergy or medical condition) and yo get stuffed
2007-04-01 13:06:50 · answer #2 · answered by Experto Credo 7 · 0⤊ 0⤋
your sinuses get bigger and it makes the passage way that the air flows through get smaller. So less air passes through and you feel stuffed up.
2007-04-01 13:09:50 · answer #3 · answered by Natural Beauty 3 · 0⤊ 0⤋
Mucus membranes swell in reaction to infections & allergens..
2007-04-01 13:09:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋