Tree and grass pollen are major asthma triggers throughout spring. Pollen irritates the airways, causing inflammation, tightness, and wheezing. Check daily pollen counts via the Met Office website or app and keep windows closed on high pollen days. Shower and change clothes after being outside, dry washing indoors, and wear wraparound sunglasses to keep pollen from the eyes. Start antihistamines before symptoms begin, and consider discussing a temporary increase in your preventer inhaler dose with me ahead of peak season. The best approach is to start preventive measures in late February, before pollen levels rise.
Summer: Thunderstorm Asthma (June to August)
Liverpool’s summer thunderstorms can trigger sudden, severe asthma attacks — even in patients whose asthma is usually well controlled. During a thunderstorm, pollen grains are broken into tiny particles that penetrate deep into the lungs. Stay indoors during and immediately after thunderstorms during pollen season, close windows when storms approach, keep your reliever inhaler with you at all times, and monitor weather forecasts carefully. These attacks can be severe and rapid — do not take chances.
Autumn: Back-to-School Season (September to October)
September sees a significant spike in asthma admissions every year, particularly in children — though adults are equally affected. Schools return full of cold viruses after summer break, dust mites thrive as central heating comes back on, and mould grows in the damp autumn air. Get the flu vaccine in September or October, deep clean bedding before the heating season begins, ensure preventer inhalers are in date and well stocked, and restart regular asthma reviews if you have lapsed over the summer months.
Winter: Cold and Flu Season (November to February)
Liverpool’s cold, damp winters are particularly challenging for asthma patients. Cold air constricts airways directly, winter viruses cause widespread airway inflammation, and spending more time indoors increases dust mite exposure. Wrap a scarf over your nose and mouth in cold weather, get COVID and flu vaccinations, keep your home well ventilated despite the cold, and maintain indoor heating at 18 to 21°C. Stock up on all medications before the Christmas period when pharmacy opening times reduce. Liverpool’s damp winters also encourage mould growth — check window frames and bathrooms regularly throughout the season.
Year-Round Prevention Strategies
Whatever the season, five habits make the greatest difference to asthma control. Take your preventer inhaler every day, even when you feel completely well — this is your strongest defence against flare-ups. Have your inhaler technique checked regularly, as most people do not use inhalers correctly. Keep a symptom diary to identify your personal seasonal patterns. Have a written action plan so you know exactly what to do when symptoms worsen. And attend regular reviews with your GP or specialist even when your asthma feels controlled.
When Seasonal Triggers Become Serious
See me urgently if seasonal triggers are causing frequent attacks, your current medications are not preventing flare-ups, you are missing work or activities during a particular season, or you have previously needed emergency care at a specific time of year. You may need higher dose preventer inhalers, additional medications such as leukotriene receptor antagonists, specialist allergy testing, or a treatment plan adjusted specifically for your high-risk season.
Signs You May Have COPD
- Start pollen season prevention in late February before symptoms begin
- Stay indoors during summer thunderstorms — thunderstorm asthma can be severe
- Get the flu vaccine every September or October
- Wrap a scarf over your nose and mouth in cold winter weather
- Stock up on all medications before the Christmas period
Respiratory Services
If you are experiencing ongoing breathing problems, specialist respiratory assessment may help clarify the diagnosis and guide treatment.
- Seasonal Asthma Review and Treatment Adjustment
- Allergy Testing and Trigger Identification
- Personalised Asthma Management Plans
- Preventer Inhaler Review and Optimisation
- Spirometry and Lung Function Testing
Frequently Asked Questions
Why does my asthma get worse in spring?
Spring pollen from trees and grasses is one of the most common seasonal asthma triggers. Pollen irritates already sensitive airways, causing inflammation, tightening, and increased mucus production. Starting antihistamines and reviewing preventer medications before pollen season peaks can significantly reduce symptoms.
What is thunderstorm asthma?
Thunderstorm asthma occurs when electrical storms break pollen grains into microscopic particles that penetrate deep into the lungs. This can trigger sudden, severe asthma attacks even in patients with usually well-controlled asthma. It is most common during summer thunderstorms in pollen season.
Why does asthma worsen in September?
September sees a well-documented annual spike in asthma admissions. Schools returning brings cold viruses, central heating returning creates warmer, drier indoor air that favours dust mites, and damp autumn conditions encourage mould growth — all combining to create a high-risk period.
How can I prevent winter asthma flare-ups?
Key winter strategies include getting the flu and COVID vaccines, wearing a scarf over the mouth in cold weather, keeping the home at 18 to 21°C, staying well stocked with medications, and avoiding close contact with people who have colds or respiratory infections.
Should I increase my inhaler dose during high pollen season?
Some patients benefit from a planned increase in their preventer inhaler dose during their known high-risk season. This should always be discussed with a respiratory specialist rather than done independently, as the right approach varies depending on your asthma severity and current medications.
Plan Ahead for Seasonal Asthma in Liverpool
The key to managing seasonal asthma is preparing before your difficult season arrives, not reacting when you are already struggling. A specialist consultation can create a year-round plan tailored to your triggers and lifestyle. Private appointments available at our Liverpool and Manchester clinics.
Book a Consultation — Call 0161 832 2111
About Dr Suman Paul
Dr Suman Paul is a Consultant Respiratory Physician with extensive experience diagnosing and managing complex lung diseases including COPD, asthma, pulmonary fibrosis and lung cancer.
Private respiratory consultations are available at Pall Mall Medical Liverpool, 5 St Pauls Square, Liverpool, L3 9SJ.
