Asthma is a very common respiratory condition in New York City—as well as other urban metropolitan areas—and is present in about 8 to 10 percent of the U.S. population. Because COVID-19 spreads through the respiratory system and attacks the lungs, those with asthma may be particularly concerned about contracting the virus. Linda Rogers, MD, Clinical Director at the Mount Sinai-National Jewish Health Institute, discusses what you need to know about COVID-19 if you have asthma.
Will I be at greater risk if I have asthma and COVID-19?
All of us who take care of patients with asthma have been concerned that having asthma may increase the risk of coronavirus or increase the risk of having a poor outcome from infection with coronavirus. Even under normal circumstances, asthma causes irregularities in immune response that may increase susceptibility to viral infection that can cause asthma to flare. There is also a subset of patients with asthma prone to wheezing and asthma flares when they develop viral respiratory infections. The coronavirus that causes COVID-19 is actually a distant relative of viruses that cause the common cold. These versions of coronavirus are normally in the community causing upper respiratory infections but unlike other viruses, such as respiratory syncytial virus (RSV) and rhinovirus, coronaviruses that cause the common cold are not among the more common viruses know to cause worsening asthma .
Generally, we’re seeing that asthma and allergies aren’t being found commonly in patients who are hospitalized with COVID-19 and who have died due to the virus. China and Italy have found very low rates of asthma in patients with a severe case of the virus and here in New York—out of thousands of patients who have died of COVID-19—the most common chronic illnesses that we find in patients who die of COVID-19 include high blood pressure, high cholesterol, diabetes, and heart disease.
How do I tell the difference between my asthma and COVID-19 symptoms?
Many of the symptoms of COVID-19 and asthma can overlap. Patients with the virus can have a dry cough and may become very short of breath—symptoms experienced by those with asthma. However, patients with asthma often find it difficult to exhale as opposed to those with COVID-19 who report difficulty taking a deep breath. So, the quality of shortness of breath may be different.
Additionally, patients with COVID-19 and those who have asthma might experience chest tightness. For patients with asthma, chest tightness should respond to quick relief medicine such as albuterol, whereas it’s less likely that the symptoms of COVID-19 would improve with albuterol. Moreover, with the virus you’re likely to have other symptoms apart from a cough, chest tightness, or shortness of breath. Often times, patients with COVID-19 will also have a fever, chills, fatigue, muscle aches, gastrointestinal symptoms, and alterations to taste and smell. Therefore, if you were to contract the virus, you would likely have symptoms other than cough, chest tightness or shortness of breath that would point in the direction of COVID-19 as opposed to your asthma.
What precautions can I take? Should I take my inhaler more often during this time?
If you are supposed to be taking daily medicine to prevent and control asthma symptoms, and you’re less than 100 percent perfect about doing that, now is a really good time to keep your asthma under control by taking your medicine regularly. However, there’s not really any benefit to taking extra doses of your quick relief medicine unless you are having symptoms for which you need relief.
Could my medication be weakening my immune system and put me at greater risk of contracting COVID-19?
Many or most patients with persistent asthma take inhaled medications to control their asthma that include inhaled corticosteroids. There has been some concern that inhaled corticosteroids may reduce immunity, but early data actually suggests the opposite. Based on some experiments done in the laboratory, the use of inhaled steroids may actually lower the presence of the ACE2 receptor—a protein present on many cells that is used by the virus to enter into the lungs and cause infection. While that is very preliminary data, it would suggest that the medicines are not harmful and actually could be protective.
Can my fear and anxiety about COVID-19 make my asthma worse?
This is a time of anxiety for all of us. It is a time where things are stressful and there is a lot of change. Stress is a driver of asthma symptoms and so it is necessary to manage our stress levels by getting enough sleep, eating well, and making sure we’re taking our asthma medication. Do all the things that you normally do to maintain your asthma and be sure to monitor your symptoms through journaling or with devices like a peak flow meter, which measures air flow from your lungs.
Although we need to be socially distancing, trying to spend time—at least remotely—with our friends and family can help reduce our stress levels. And, stay in touch with your health care provider through telemedicine. Reach out if your asthma worsens or you have symptoms that might reflect infection with COVID-19.