Intrinsic asthma

Intrinsic asthma, is a nonseasonal, nonallergic form of asthma, which usually first occurs later in life than allergic asthma and tends to be chronic and persistent rather than episodic. Precipitating factors include inhalation of irritating pollutants, such as dust particles, smoke, aerosols, strong cooking odors, and paint fumes and other volatile substances. Intrinsic asthma may also be triggered by exposure to cold, damp weather; sudden inhalation of cold, dry air; physical exercise; violent coughing or laughing; respiratory infections, such as the common cold; or psychologic factors, such as anxiety.

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Allergic Asthma

Most people find several things trigger their asthma. Some of the most common predisposing factors for asthma are allergies to:

• House dust mites
• Mould spores
• Pollen
• Pets
• Food or food preservative

Allergic asthma is the most common type of asthma. Inhaling specific substances called allergens (listed above) brings on the asthma symptoms associated with allergic asthma. Nearly everyone with asthma allergic or non-allergic gets worse after exercising in cold air or after inhaling any type of smoke, dust, fumes, and sometimes strong smells.
Because allergens are everywhere, it's important that people with allergic asthma understand their allergy and asthma triggers. And then learn the facts about preventing asthma symptoms. If anyone has allergic asthma, their airways are hypersensitive to the allergens to which they have become sensitized. Once these allergens get into your airways, your immune system overreacts. The muscles around your airways tighten. The airways themselves become inflamed and flooded with thick mucus.

Whether you have allergic asthma or non-allergic asthma, the symptoms of asthma is generally the same and may include any or all of the following:

• Coughing
• Wheezing
• Shortness of breath
• Rapid breathing
• Tightening of the chest
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