Causes of Asthma
One cause of bronchial asthma is definitely allergic. An individual may have hay fever and asthma simultaneously during the ragweed season or may at this time experience attacks of asthma only. Other allergens may be responsible, including the dander from animal fur and feathers, face powder, or certain foods.
Many cases of bronchial asthma are associated with bacterial infections, especially of the sinuses, throat, and nose. Sometimes these improve very markedly when the infection clears up.
Some cases of bronchial asthma appear to be due to nervous tension and often improve tremendously when the person's emotional problems are solved with the help of a counselor.
These cases become worse if the person is emotionally disturbed or tense. For this reason asthma is also included among the psychosomatic diseases.
Risk factors of Asthma
The strongest risk factors for developing asthma are exposure, especially in infancy, to indoor allergens (such as domestic mites in bedding, carpets and stuffed furniture, cats and cockroaches) and a family history of asthma or allergy.
Exposure to tobacco smoke and exposure to chemical irritants in the workplace are additional risk factors. Other risk factors include certain drugs (aspirin and other non-steroid anti-inflammatory drugs); low, birth weight and respiratory infection. The weather (cold air), extreme emotional expression and physical exercise can exacerbate asthma. Urbanization appears to be correlated with an increase in asthma.
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