In cats, bronchitis and asthma can be difficult to distinguish.
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“Because both bronchitis and asthma can cause a daily cough as the only clinical sign, there are many times when it is not possible to distinguish bronchitis from asthma in the cat. Nevertheless, the diagnosis, prognosis and treatment options for both diseases overlap with great frequency.”
-Johnny D. Hoskins, DVM, PhD, DACVIM
From Treating feline bronchial disease