The exact cause of asthma is often not found. However, some of the important factors are:
Genetic factors: If parents or siblings in the family have asthma, it is more likely to develop.
Allergies: Childhood allergies (eczema, hay fever) can lead to asthma.
Environmental factors: Low birth weight, respiratory infections (especially in childhood), and excessive air pollution can be causes.
Asthma triggers
Things that cause sudden wheezing in people with asthma:
Allergens: Dust mites, pollen, pet dander, cockroaches, etc.
Infections: Respiratory infections such as colds, flu, and sinusitis.
Air pollution: Smoking, vehicle exhaust, fumes from factories, strong odors of paint/perfumes.
Weather: Sudden weather changes, extreme cold, and humidity.
Physical exertion: strenuous exercise (Exercise-induced asthma).
Emotional state: excessive anxiety, stress, laughter, or anger.
Main symptoms
A whistling sound when breathing (Wheezing).
Chest pain or a feeling of heaviness in the chest.
A cough that worsens at night or when waking up in the morning.
Difficulty breathing.
