Hay fever treatment aims to reduce allergen exposure and control the inflammatory response. Common treatments include antihistamines, corticosteroid nasal sprays and, in some cases, eye drops or saline nasal irrigation. Treatment choice depends on which symptoms are most troublesome, how frequently they occur and whether the person has other conditions such as asthma. Nasal corticosteroid sprays are often particularly effective for persistent nasal congestion because they reduce local inflammation rather than merely blocking histamine. Medicines should be used according to product instructions or professional advice, particularly in children, pregnancy or people taking other medicines.
Antihistamines block the effects of histamine at histamine receptors and can reduce sneezing, itching, watery eyes and runny nose. Modern second-generation antihistamines such as cetirizine, loratadine and fexofenadine are generally less sedating than older antihistamines, although individual responses vary and some people still experience drowsiness. Sedation matters for driving and other safety-sensitive activities. Antihistamines do not remove the underlying sensitisation and may be less effective for severe nasal congestion than anti-inflammatory nasal treatment.
Corticosteroid nasal sprays reduce inflammatory activity in the nasal mucosa and are among the most effective treatments for persistent allergic rhinitis. They can reduce congestion, sneezing, itching and runny discharge when used correctly. They often work best when used regularly during periods of expected exposure rather than only after symptoms become severe. Correct technique matters: the nozzle should generally be directed away from the nasal septum and sprayed according to the product instructions. Some people experience nasal irritation or nosebleeds, particularly when technique is poor or the medication is overused.
Eye symptoms can require additional treatment. Antihistamine or mast-cell-stabilising eye drops can reduce itching and watering, while antihistamine tablets may help systemic symptoms. Artificial tears can dilute allergens from the ocular surface and provide symptomatic relief. Rubbing the eyes can worsen irritation and potentially damage the ocular surface. Persistent severe eye pain, marked visual disturbance or significant light sensitivity is not typical uncomplicated hay fever and warrants medical assessment because more serious eye conditions can present differently.
Reducing exposure can complement medication. During periods of high pollen exposure, people with significant symptoms may benefit from keeping windows closed when pollen levels are high, changing clothes after prolonged outdoor exposure, showering or washing hair before bed, and avoiding drying laundry outdoors when pollen counts are high. Sunglasses can reduce pollen contact with the eyes. Complete avoidance is usually unrealistic, however, and excessive restrictions can unnecessarily reduce outdoor activity. Exposure-reduction measures should therefore be proportionate to symptom severity.
Saline nasal irrigation can physically wash allergens and mucus from the nasal passages and may improve congestion or irritation. Appropriate sterile, distilled or previously boiled and cooled water should be used according to safe preparation instructions because inadequately treated water can introduce dangerous microorganisms into the nasal passages. Decongestant nasal sprays are different from corticosteroid sprays and should not generally be used continuously because prolonged use can cause rebound congestion, known as rhinitis medicamentosa.
Severe or persistent allergic rhinitis that remains troublesome despite appropriate standard treatment may be assessed by an allergy specialist. Allergen immunotherapy involves repeated controlled exposure to the relevant allergen through subcutaneous injections or sublingual treatment, with the aim of modifying the immune response over time. It is not appropriate for everyone and requires specialist assessment because allergic reactions can occur. Immunotherapy is distinct from simply taking antihistamines: it is a disease-modifying approach directed at a specific confirmed allergen.
Treatment should also consider associated asthma because pollen can exacerbate lower-airway disease. A person experiencing wheezing, chest tightness or significant breathlessness should not assume that these symptoms are ordinary hay fever. Persistent symptoms that interfere with sleep or daily functioning may justify a review of diagnosis and treatment technique. In practice, a combination of appropriate avoidance, correctly used nasal corticosteroids and/or antihistamines often provides substantial control, while specialist assessment is appropriate for difficult or severe cases.
