Allergic asthma can be acute (asthma attack) or chronic.
In the case of allergy to pollen or animal hair, allergic asthma can occur on its own or in conjunction with allergic rhinitis or allergic conjunctivitis.
Chronic allergic asthma is generally due to an allergy to house dust mites, or to animal hair (cats and dogs) when pets are present in the home.
In the case of strong pollen allergy, allergic asthma can last all season, up to 6 months a year, and is then qualified as seasonal, or even chronic.
Acute allergic asthma can also be caused by acute allergic reactions to food or medication, in which case the reaction is anaphylactic, or even anaphylactic shock.