Respiratory symptoms like wheezing are often quickly linked to asthma, but medical experts are now urging caution. A single sound during breathing may sometimes hide a far more serious underlying condition. In a recent video shared on Instagram, former AIIMS director Dr Randeep Guleria highlighted how doctors and patients should not assume every case of wheezing is due to asthma.
He explained a powerful clinical lesson: not all wheezes indicate asthma. This principle (first mentioned in medical literature by Dr Jackson in the Boston Medical Quarterly) still holds strong relevance in modern medicine. According to him, careful clinical evaluation is essential, especially when symptoms do not improve with standard treatment for asthma.
When Asthma Treatment Fails: A Warning Sign
Dr Guleria shared a case that highlights the danger of misdiagnosis. A woman with breathlessness and wheezing was diagnosed with asthma and started on strong treatment, including oral and injectable steroids. Despite aggressive therapy, her condition did not improve.
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Over time, prolonged steroid use led to Cushingoid features, a condition caused by excess steroid exposure. Even after multiple medications and nebulisation, her symptoms persisted, raising doubts about the initial diagnosis of asthma.
On detailed examination in the OPD, a key clue emerged. The wheeze was monophonic, not polyphonic. This subtle difference suggested a possible airway blockage rather than asthma, which usually produces multiple musical sounds in the chest.
Further investigation revealed that routine X-ray and CT scans appeared normal at first. However, a closer look showed a widened carina. A bronchoscopy was then performed, which uncovered a tumour at the bifurcation of the trachea. The diagnosis had been delayed, allowing the disease to progress significantly.
Other Airway Conditions: What Doctors Look For
Experts say distinguishing between different types of wheezing is crucial in diagnosing asthma correctly. Polyphonic wheezing is typically seen in asthma, where multiple airways are narrowed. However, a monophonic wheeze may indicate a single large airway obstruction, which can sometimes be caused by tumours or other serious blockages.
According to a clinical review published by the American Thoracic Society (ATS), persistent wheezing that does not respond to standard asthma treatment should always raise suspicion of alternative diagnoses, including central airway obstruction or structural abnormalities.
While asthma is a common cause of wheezing, it is not the only one. Misdiagnosis can delay life-saving treatment. Doctors and patients should look beyond common assumptions, especially when symptoms persist despite proper care.
In respiratory medicine, careful listening and detailed evaluation can sometimes make the difference between routine treatment and early detection of a serious hidden disease.
