Which type of antihistamines is recommended for allergic conjunctivitis?

The recommended approach for managing allergic conjunctivitis is the use of both oral and topical antihistamines. Topical antihistamines, such as those in eye drop formulations, act directly on the eyes and provide quick relief from symptoms by targeting the specific area affected by the allergic response. They are especially effective in reducing redness, itching, and watering of the eyes.

Oral antihistamines are also beneficial as they help alleviate systemic allergic symptoms by blocking histamine action on H1 receptors throughout the body. They can help manage symptoms beyond just the eyes, such as nasal congestion and sneezing, which often accompany allergic conjunctivitis.

The combination of both types of antihistamines allows for a more comprehensive approach to treatment. Topical antihistamines can provide rapid localized relief, while oral antihistamines can provide more generalized control of allergy symptoms. This dual-action approach is particularly useful in cases where individuals experience both ocular and nasal manifestations of allergies.