Can Cat Ringworm Lead to Respiratory Infections? Expert Insights - Pulmonology

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Can ringworm (fungal infection) cause respiratory infections?


Hello, Wangfu Hospital: My cat at home has been infected with ringworm, which has caused me to be infected as well over the past week.
After visiting the dermatology clinic today, I was tested and confirmed to have a fungal infection.
The doctor only prescribed topical medication and scheduled a follow-up appointment for next week.
However, I have been experiencing asthma and coughing symptoms recently, and I suspect that my respiratory system may also be affected or infected.
Should I make an additional appointment with a pulmonologist or an infectious disease specialist? Or should I wait until next week to discuss my respiratory symptoms with the dermatologist if they persist? Additionally, should I stop using my asthma medication (which contains steroids) for now?

QQ, 20~29 year old female. Ask Date: 2022/09/14

Dr. Wang Lanfeng reply Pulmonology


Hello: Based on your description, your condition seems more like asthma triggered by exposure to an allergen, resulting in upper respiratory symptoms.
It is recommended that you visit a pulmonology clinic for further evaluation.
Thank you.

Reply Date: 2022/09/14

More Info


Cat ringworm, scientifically known as dermatophytosis, is a fungal infection that primarily affects the skin, hair, and nails of cats and can be transmitted to humans. It is important to understand the implications of this infection, especially when considering respiratory symptoms such as asthma and cough.

Firstly, while cat ringworm itself does not directly cause respiratory infections, there are several factors to consider. The primary concern with ringworm is that it is a dermatophyte infection, meaning it primarily affects the skin. The spores of the fungus can be airborne, and in some cases, individuals with compromised immune systems or pre-existing respiratory conditions may experience exacerbated symptoms when exposed to these spores. However, this is not the same as a respiratory infection caused by a pathogen like a virus or bacteria.

In your case, since you have been diagnosed with a fungal skin infection and are experiencing respiratory symptoms, it is crucial to evaluate the situation carefully. Asthma can be triggered by various environmental factors, including allergens, irritants, and infections. If your asthma symptoms have worsened since the onset of the ringworm infection, it may be worth consulting with a pulmonologist or an infectious disease specialist to rule out any secondary infections or complications.

Regarding your current asthma medication, particularly if it contains corticosteroids, it is generally not advisable to stop taking prescribed medications without consulting your healthcare provider. Corticosteroids can help reduce inflammation in the airways, and abruptly stopping them may lead to a rebound effect, worsening your asthma symptoms. Instead, it would be prudent to discuss your concerns with your prescribing physician, who can provide guidance on whether any adjustments to your treatment plan are necessary.

If your respiratory symptoms persist or worsen, it would be wise to schedule an appointment with a pulmonologist. They can perform a thorough evaluation, including lung function tests, and determine if there is an underlying issue that needs to be addressed. Additionally, if you notice any signs of infection, such as fever, increased coughing, or difficulty breathing, seek medical attention promptly.

In summary, while cat ringworm itself is unlikely to directly cause respiratory infections, it can contribute to exacerbating existing respiratory conditions in sensitive individuals. It is essential to monitor your symptoms closely and communicate with your healthcare providers about any changes in your health. If your respiratory symptoms do not improve or worsen, do not hesitate to seek further evaluation from a specialist. Your health and well-being should always be the top priority.

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