Allergist | Beirut | Lebanon

One of the marvels of the human immune system is that it can defend itself against harmful invaders such as viruses or bacteria. But sometimes the response is exaggerated and allergens such as dust, molds or pollen are identified as dangerous. The immune system then rallies its defenses, which include several chemicals to attack and destroy the supposed enemy. In the process, some unpleasant and, in extreme cases, life-threatening symptoms may be experienced in the allergy-prone individual.

There are hundreds of ordinary substances that can trigger allergic reactions. Among the most common are plant pollens, molds, household dust (dust mites), cockroaches, pets, industrial chemicals, foods, medicines, feathers and insect stings. These triggers are called "allergens."

Asthma and allergies can affect anyone, regardless of age, gender, race or socioeconomic factors. While it's true that asthma and allergies are more common in children, they can occur for the first time at any age. Sometimes allergy symptoms start in childhood, disappear for many years and then start up again during adult life.

Although the exact genetic factors are not yet understood, there is a hereditary tendency to asthma and allergies. In susceptible people, factors such as hormones, stress, smoke, perfume or other environmental irritants also may play a role.