cold flu bronchitis and sinus infections can cause an asthma attack. these respiratory infections that trigger asthma can be viral or bacterial and are a common cause of asthma especially in children under age 10. this airway sensitivity that causes the airways to more easily narrow can last as long as two months after an upper respiratory infection. it's thought that anywhere from 20% to 70% of asthmatic adults have coexisting sinus disease. conversely 15% to 56% of those with allergic rhinitis (hay fever) or sinusitis have evidence of asthma.
can asthma be “triggered” by a cold flu bronchitis or sinus infections?