Unexpectedly, many people have worse allergy symptoms on rainy days. On days with heavy rain, it is easy for allergens such as mold and house dust to multiply in the moist air. Also, rain causes spring pollen to break down into smaller particles and scatter farther.
Healthline, an American health and medical media outlet, said, “Rainwater may contain toxins and various pollutants. He cautioned, “Taking appropriate measures, such as running a dehumidifier and taking allergy medication on rainy days, will help treat allergies.” According to the U.S. Centers for Disease Control and Prevention (CDC), rainwater can contain dust, smoke, asbestos, lead, copper, and various chemicals. It is also likely to contain viruses, bacteria, parasites, and mold.
When it rains, the number of people spending the day indoors increases. This can be the worst environment for people who are allergic to mold, dust, pet dander, etc. Rainwater can cause allergic reactions and serious illness. Rainwater should not be considered safe for home use unless it has been tested and treated. The CDC warns, “It is especially advisable for people with weak immune systems to avoid using rainwater as much as possible.”
Allergy symptoms on rainy days vary from person to person. Symptoms also vary depending on the type of allergic substance. Some people’s allergy symptoms decrease when it first starts raining, but then worsen rapidly. This phenomenon can occur when broken pollen scatters into the air. Common symptoms of allergies include stuffy nose, sneezing, runny nose, wheezing, dry cough, shortness of breath, fatigue, itchy eyes, red and swollen eyes, headache, vomiting, hives and rash, and irritability.
Special measures are needed on rainy days. To alleviate various allergy symptoms, you should close your windows on rainy days, especially during allergy season. You need to watch closely to see if the pollen is flying around too much and take action accordingly. On rainy days, you should take allergy medications such as antihistamines, rinse your nose with saline solution, and clean your house frequently to prevent dust from accumulating.
It is also necessary to remove moisture to prevent mold and dust from growing inside the house. It is better to use a dehumidifier. Symptoms should be managed well with nasal allergy medication (nasal corticosteroid spray). On rainy days, allergy symptoms are severe and over-the-counter medications that can be purchased at the pharmacy without a prescription may not be of much help. In such cases, it is best to find a hospital quickly. Immunotherapy injections may relieve symptoms in people who suffer from seasonal allergies.
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