Grass allergy
May 17, 2026
Grass allergy – causes, symptoms and treatment

Grass allergy is a common form of pollen allergy that affects people of all ages. It is caused by pollen from various grasses that are spread in the air, especially during the spring and summer. Over-the-counter medications can help relieve symptoms. If you have severe symptoms, allergy shots may be an option.
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Causes of grass allergy
Grass allergies occur when the body's immune system mistakenly identifies the harmless pollen particles from grass as a threat and forms antibodies against them. When you breathe in grass pollen, the body defends itself by releasing chemicals such as histamine, which causes various allergic symptoms.
Why some people develop grass allergies and others do not is not fully understood, but there are several factors that can contribute to developing this type of allergy. Heredity plays an important role – if close family members have allergies, the risk of developing it yourself increases. Environmental factors also play a role. For example, people who live in areas with high concentrations of grass pollen may be more likely to develop allergies to them. Lifestyle factors, such as smoking or high stress, and exposure to certain environmental pollutants can also increase susceptibility.
Grass allergies can develop at any age, but it most commonly begins in childhood or early adulthood. Some people may find that their symptoms change or disappear over time, while others may have the allergy for life.
Symptoms of grass allergy
The symptoms of grass allergy are similar to other types of pollen allergies. Some of the most common symptoms are sneezing, runny or stuffy nose, itchy and watery eyes, and itching in the nose and throat. In some people, grass allergy can also lead to asthma-like symptoms such as shortness of breath and wheezing. It is not uncommon to experience fatigue and headaches as a result of allergic reactions. Grass allergy can also cause rashes on the skin. In children, grass allergy can manifest itself through similar symptoms, but it can also affect their sleep and cause difficulty concentrating.
Cross-allergy related to grass allergy
People with grass allergies can also experience cross-allergy, where they become allergic to certain foods that are related to the grass pollen they are allergic to. This is due to similarities in the protein structure between grass pollen and the foods in question. Symptoms of cross-allergy can include itching in the mouth, swelling of the lips, tongue and throat, and stomach upset after eating certain fruits, vegetables or nuts. It is relatively uncommon to develop cross-allergy in connection with grass allergy, but it does happen.
Treatment of grass allergy
The treatment of grass allergy is mainly aimed at relieving symptoms and improving the quality of life for those affected. There are over-the-counter medications at the pharmacy that can help with mild symptoms. Antihistamine tablets are a common form of treatment that helps reduce allergic reactions. Nasal sprays with cortisone can also be effective in reducing inflammation and irritation in the nose. Eye drops can be used to relieve irritated and itchy eyes.
If you are experiencing more severe symptoms and over-the-counter medications are not helping, you can contact us at Recetas Medicas. We will advise you on how to relieve your symptoms and, if necessary, we can also prescribe medication. Fill out our health form and you will receive an answer within 15 minutes.
For those who experience really severe symptoms, allergy shots may be an alternative. This treatment method involves regularly taking small doses of the allergen to gradually build up a tolerance to it.
Grass pollen season in Sweden
In Sweden, the grass pollen season usually lasts from May to September. Pollen levels are highest during the summer, but you may experience discomfort right into October.
The pollen season is affected by different weather conditions such as temperature, precipitation and wind, which means that your symptoms can vary from year to year and even during the same season. During hot and dry periods, pollen levels are generally higher, while rain helps to clear the air of pollen. In addition, pollen levels can vary from day to day and even during different times of the day. At Pollenkoll.se you can see current pollen forecasts for the entire country.
What can I do myself?
There are several steps you can take to help relieve grass allergy symptoms. Staying indoors on days when pollen counts are high can help reduce exposure. If you must mow your lawn, it is best to do so in the morning when the grass is damp with dew, which binds the pollen particles. Avoid hanging laundry outside during pollen season. When you get home, it can be a good idea to change clothes and wash your hands and face to remove pollen. Keeping windows closed and using an indoor air purifier can also help.
Get prescriptions for grass allergy online
Grass allergy is a common allergic reaction that can affect both adults and children. If you are bothered by your grass allergy and need more effective treatment than over-the-counter medications, you can get help from us at Recetas Medicas. By filling out our online health form, you will quickly get in touch with a doctor who can assess your symptoms and prescribe the appropriate medication. With the right treatment, you can manage your grass allergy more effectively and enjoy the summer without unnecessary discomfort.
Start your form now
Get treatment within 15 minutes without video calls or visits


