- Asthma - Symptoms and causes - Mayo Clinic
Allergy-induced asthma, triggered by airborne substances, such as pollen, mold spores, cockroach waste, or particles of skin and dried saliva shed by pets (pet dander) When to see a doctor Seek emergency treatment Severe asthma attacks can be life-threatening Work with your doctor to determine what to do when your signs and symptoms worsen
- Asthma: Causes, Symptoms, and Treatment - WebMD
What Is Asthma? Asthma is a long-term disease of the lungs It causes your airways to get inflamed and narrow, which makes it hard to breathe Severe asthma can cause trouble talking or being active
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