Montelukast (Singulair) is a drug that relieves allergy symptoms and is also used to prevent asthma attacks. It reduces congestion in your nose and also cuts down on sneezing, itching, and eye allergies. For people with allergies and asthma, it helps keep airways to your lungs open.
It works by stopping the action of a chemical called leukotriene, which causes your nasal passages to swell and make a lot of mucus. The same chemical is also responsible for tightening airways when you have asthma, making it harder to breathe.
If you find yourself developing a killer headache when riding an elevator
with someone who was a bit generous dabbing on the perfume, you have company.
More than 2 million Americans have fragrance allergies or sensitivities -- and
the number is on the rise.
Although that person's perfume may have been all too obvious a culprit,
there are many hidden sources of fragrances, says Clifford W. Bassett, MD,
medical director of Allergy & Asthma Care of New York. Bassett helped
WebMD sniff out...