Things You'll Need:
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Step 1
Look for signs of breathing difficulties. Toddlers with asthma will generally have a chronic cough, difficulty breathing, and flaring nostrils. Wheezing or whistling while breathing is another sign of asthma. Rapid breathing is another symptom of asthma and can occur even while your toddler is sleeping.
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Step 2
Watch for changes in your toddler's attitude when playing. If he is having trouble breathing, he may not have much interest in physical activities. Pay attention to your toddler's emotions. Emotional stress can trigger asthma attacks and difficulty breathing. If your child throws a tantrum and begins to have trouble breathing, this could be a sign that he has asthma.
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Step 3
Talk with your doctor about the symptoms you have noticed in your toddler. A doctor can diagnose asthma in children via a lung-function test only if the child is older than 6, so the doctor will have to rely on what you know about your toddler's symptoms. Only then will the doctor be able to help you determine whether your child has asthma. Keep a journal of symptoms. Record all flare-ups and note breathing patterns.











