leukotrienes

Leukotrienes are naturally occurring chemicals in the body that play a key role in the immune response, especially in allergic reactions and asthma. They are produced by certain cells in response to allergens or irritants and cause inflammation, swelling, and constriction of airways. This leads to symptoms like wheezing, nasal congestion, and difficulty breathing. Medications called leukotriene inhibitors can block their effect, helping to reduce inflammation and prevent asthma attacks. Overall, leukotrienes are part of the body's defense system but can contribute to allergic and respiratory conditions when produced excessively.