Asthma is one of the most common respiratory diseases in children. International guidelines recommend three very clear steps — the ABCs of diagnosis.

A for Attention to Symptoms

• Nighttime coughing or coughing when running
• Wheezing (“whistling”) in the chest
• Shortness of breath or easy fatigue
• Chest tightness (feeling of breathlessness)

👉 If these symptoms are recurrent, asthma is suspected.

B for Blockage Detection
Through a spirometry or impulse oscillometry test, doctors can measure whether the bronchi are obstructed.
If there is improvement after administering medication, the disease can be confirmed, leading to the third step — the cherry on top.

C for Confirm with Biological Tests

• FeNO (inflammation in exhaled air)
• Allergy tests (blood or skin)

These studies help personalize treatment and determine the type of asthma, since it is not always allergy-related.

What if my child can’t undergo these tests?
International guidelines also account for this scenario — a trial treatment can be prescribed:

• An inhaler for 8 to 10 weeks
• Evaluate improvement during that period

In summary:

• Recognize the symptoms
• Confirm obstruction
• Verify with biological studies (or with a trial treatment)

With these steps, your child can receive a safe diagnosis and effective treatment.
Breathing well is living well.