What is the common treatment for allergic reactions?

Administering antihistamines is the standard treatment for allergic reactions due to their ability to block histamine, a substance in the body that is responsible for many symptoms of allergies. Antihistamines can alleviate symptoms such as itching, hives, nasal congestion, and sneezing. They work effectively within the first few hours of taking the medication and help to prevent the allergic response from worsening.

Cold compresses may provide temporary relief for localized symptoms like itching or swelling but do not address the underlying allergic response. Corticosteroids are often used in more severe cases or chronic conditions to reduce inflammation, but they are not the first line of treatment for mild allergic reactions. Immediate hospitalization may be necessary for severe allergic reactions, such as anaphylaxis, but it is not a common treatment for all allergic reactions, which can often be managed effectively with antihistamines.