Chile's hidden asthma crisis: up to 1 in 10 may be undiagnosed

Somewhere in Chile right now, a person is waking up short of breath. They cough through the morning. By afternoon, their chest feels tight. They assume it's stress, or the weather, or something that will pass. They don't go to the doctor. They don't know they have asthma.

This scenario plays out far more often than official numbers suggest. While Chile's health surveys report that 5.4% of adults have been diagnosed with asthma, respiratory specialists warn that the true figure is far higher—somewhere between 7% and 10% of the population. That gap represents hundreds of thousands of Chileans living with a chronic respiratory disease they don't recognize, can't name, and therefore can't treat. In children and adolescents, the prevalence climbs even higher, exceeding 15%, which means the disease is establishing itself in young lungs before many families even realize what's happening.

Asthma is fundamentally a problem of inflammation in the airways. When someone has it, their breathing passages swell and narrow, making air harder to move in and out of the lungs. The result is a constellation of symptoms most people recognize if they're looking for them: wheezing, persistent cough (especially at night), shortness of breath, chest tightness. But many people don't look for these signs. They live with them. They adapt. They suffer quietly until a crisis forces them into a hospital bed.

Dr. Evelyn Pallero, a physician and instructor at the Faculty of Medicine at Universidad del Alba, frames the problem plainly: asthma is not a childhood disease confined to a small population. It affects Chileans across every age group, and in many cases, it goes undiagnosed for years. When diagnosis is delayed, treatment is delayed. When treatment is delayed, the risk of serious attacks—the kind that require emergency care—climbs steadily. The disease becomes harder to control, not easier.

The environment in Chile makes this worse. Pollution hangs over cities, especially in winter. Respiratory viruses circulate through schools and workplaces. Temperature swings stress the airways. Tobacco smoke lingers in homes. All of these are known triggers that push asthma from a manageable condition into an acute crisis. But even when people do receive a diagnosis, another barrier emerges: they don't use their inhalers correctly. They forget doses. They don't understand how the medication works or why consistency matters. Treatment adherence remains low, which means the disease remains uncontrolled, which means hospitalizations continue.

Chile's healthcare system has built a safety net. Asthma is covered under the GES program, which guarantees access to diagnosis and medication. That's significant—it means cost is not the barrier it might be elsewhere. Yet gaps persist in patient education and ongoing medical follow-up. People need to know what symptoms warrant a doctor's visit. They need to recognize the difference between a minor episode and a medical emergency. They need to understand that a persistent cough at night is not normal, that wheezing is a signal, that tightness in the chest deserves attention.

Digital health tools are beginning to fill some of these gaps. Mobile applications now allow patients to log their symptoms, track inhaler use, and receive treatment reminders. Smart devices can monitor breathing patterns. Telemedicine platforms connect patients with doctors without requiring a trip to a clinic or emergency room. These tools matter not just for convenience—they matter because they create a continuous record of how a person's asthma is actually behaving, which allows doctors to adjust treatment before a crisis happens. They reduce the need for emergency visits. They keep people out of hospitals. They make the disease manageable rather than frightening.

The path forward requires both technology and education. Digital systems can track and alert. But only education—real, sustained conversation between doctors and patients about what asthma is, how to recognize it, how to treat it, and when to seek help—can transform a hidden crisis into a managed condition. For the hundreds of thousands of Chileans who don't yet know they have asthma, that conversation hasn't started. It needs to.