My thesis, "Pharmacology of Allergy Diseases," offers a comprehensive exploration of the mechanisms behind allergic reactions and the pharmacological strategies used to manage them. It systematically reviews a wide range of treatments, including antihistamines, corticosteroids, and leukotriene receptor antagonists, evaluating their effectiveness and limitations. A significant focus is placed on allergen immunotherapy, which is highlighted as a promising long-term treatment that can modify the immune system's response to allergens. The work also addresses the management of specific conditions like allergic rhinitis, asthma, and atopic dermatitis. Ultimately, the thesis advocates for an integrated approach that combines pharmacotherapy with patient education to improve treatment outcomes and address global health disparities in allergy care.