Subtle Symptoms That May Signal a Serious Health Condition

Dr. Nicole Ng, associate director of the Interstitial Lung Disease Program at Mount Sinai Health System, has warned that common and ordinary-seeming symptoms can be early indicators of a serious health condition known as idiopathic pulmonary fibrosis (IPF).

These subtle warnings include acid reflux, shortness of breath, and a persistent cough. While these symptoms often occur individually and may be attributed to temporary causes, Dr. Ng notes that when they appear together and persist, they may signal a more significant underlying issue.

Understanding Idiopathic Pulmonary Fibrosis

IPF is categorized as one of more than 200 conditions that fall under the umbrella of interstitial lung disease (ILD). These conditions specifically target the space surrounding the alveoli, which are the air sacs in the lungs.

They all tend to affect the space around the air sacs (alveoli) in the lungs and cause inflammation and/or scarring, which makes the lungs stiffer and less able to move oxygen into the bloodstream.

Nicole Ng, M.D., associate director of the Interstitial Lung Disease Program at Mount Sinai Health System

The term idiopathic in IPF indicates that the condition develops with no known cause. When a patient undergoes a lung scan, a diagnosis of IPF is typically made if the scan reveals a characteristic pattern of scarring without an identifiable external or internal trigger.

The Broader Context of Interstitial Lung Disease

While IPF has no known cause, other forms of interstitial lung disease are linked to specific triggers. Some types of ILD are caused by exposure to certain environmental toxins.

Other variations of the disease may occur in individuals who have autoimmune conditions that involve the lungs, such as rheumatoid arthritis.

Approximately 50,000 Americans are diagnosed with IPF each year. The condition most commonly affects older adults, which often complicates early detection.

Because the symptoms of IPF develop gradually, patients and providers may mistakenly attribute the decline in respiratory function to the general effects of aging.

Distinguishing Signs and Symptoms

In a medical context, there is a critical distinction between a sign and a symptom. According to the Brown University Health Blog Team, a sign is an objective finding that can be observed or measured by others, such as a physician or family member.

Examples of signs include skin rashes or elevated blood sugar levels. In contrast, symptoms are subjective experiences that are only apparent to the person experiencing them and cannot be measured by an outside observer.

A common example of a symptom is tinnitus, or ringing in the ear, which the patient hears but others cannot. In the case of IPF, the initial warnings—such as shortness of breath, also known as dyspnea—are symptoms that the patient must report to a healthcare provider for further investigation.

Dr. Ng suggests that if these ordinary symptoms continue to appear, it is advisable to make an appointment with a doctor to determine if a lung condition is the cause.