The most common similarity between asthma and allergies is the source of the two conditions. The trigger may be substances like pollen, pet dander, and dust mites in either case. Allergy-induced asthma, or allergic asthma, refers to the condition wherein allergies related to food or skin can cause symptoms of asthma.

Let us understand, in detail, the different causes of asthma and allergies.

Causes of asthma
There are several causes and triggers of asthma. The airways of different people react to different substances in the world in varied ways. Some of these could induce asthma and some could make an existing condition worse. Let us list down the different conditions and substances that can cause or alleviate an asthmatic condition.

• Sinusitis, cold, flu, and other such conditions
• Pollen, mold, dust mites, pet dander, and other such allergens
• Strong odors, such as those from cleaning solutions and perfumes
• Air pollution/tobacco smoke
• Exercising or rigorous activity
• Weather changes, such as those resulting in humidity and sudden low temperatures
• Gastroesophageal reflux disease (GERD)
• Sudden overwhelming emotions like anxiety, sadness, stress, or even uncontrollable laughter
• Several medications like Aspirin
• Several kinds of food preservatives that are known by the name of sulfites. These are usually found in dried fruits, lemon and lime juices packed in bottles, shrimp, and pickles.

The chance of an asthma attack can gravely increase in some instances. For example, if a person is working in an industrial site and has symptoms of asthma, dust might induce an attack. Thus, if a person is asthmatic, it is best to stay away from such places. In addition, an asthma attack can further give rise to other health problems. So, this should also be taken into account.

Causes of allergies

• This is one subject that is still not thoroughly known to doctors, and while there are answers to some questions related to causes of asthma and allergies, some of them remain unanswered.
• It is understood that certain allergies can be hereditary. If a family member is prone to having allergies, there are higher chances that you might also have similar allergies, as compared to a person who does not have a family history of the condition.
• Some of the substances that are commonly known to cause an allergic reaction include certain kinds of foods like nuts and jelly. There are a large number of people who are also allergic to lactose, and thus cannot consume any milk products. The bite of bees and some other insects can also lead to an allergic reaction and affect a person more than it would affect others. In addition, medications such as penicillin can lead to an allergic reaction in some people. People can also be allergic to the smell of certain plants, while many people are allergic to pollen and molds.

It is important to know these different causes of asthma and allergies to be better prepared for an allergic or asthmatic episode.