Rainy days bring runny noses: Allergies or a cold? An ENT doctor explains

As Taiwan experiences a period of unpredictable weather, with sudden downpours and shifts between humidity and air-conditioned interiors, many individuals are finding themselves battling persistent symptoms of sneezing, runny nose, and nasal congestion. This has led to a common question at clinics: "Is this allergies or a cold?"

Dr. Li Tsung-hsun, an Ear, Nose, and Throat specialist, notes that the initial symptoms of allergic rhinitis and the common cold can indeed be very similar, often including sneezing, a runny nose, and nasal blockage. However, he points out that allergic reactions typically manifest with a more pronounced itchiness in the nose, frequent sneezing fits, clear nasal discharge, and a tendency to flare up upon changes in weather, entering air-conditioned rooms, or during the early morning. Some individuals also experience itchy eyes. The current weather, characterized by muggy conditions followed by rain and indoor cooling, is particularly conducive to triggering sensitive respiratory systems.

Distinguishing between the two requires a holistic view of symptoms, according to Dr. Li. While a runny nose is common to both, he emphasizes looking at the onset of symptoms, their severity in the morning, the presence of nasal itching, and triggers like weather changes. If symptoms progress to include a significant sore throat, fever, body aches, general fatigue, or a noticeable decrease in appetite, then a viral infection like the common cold should be considered. For children with sensitive airways, persistent coughing, especially after exertion or at night, may also indicate an underlying issue beyond simple allergies.

Dr. Li advises managing the home environment to mitigate allergy triggers, recommending efforts to keep rooms dry, using dehumidifiers judiciously, and ensuring bedding is not perpetually damp. He also suggests avoiding excessively cold air conditioning. While occasional sneezing or a mild runny nose that quickly resolves might be monitored, persistent nasal congestion, disrupted sleep, and significant daytime discomfort warrant a professional evaluation of both the nose and the respiratory tract.