Therapy and Prevention of Allergies.- Allergen Avoidance and Prevention of Allergy.- Pharmacotherapy of Allergic Rhinitis.- Antihistamines in Rhinitis and Asthma.- Antiallergic and Vasoactive Drugs for Allergic Rhinitis.- Antileukotrienes in Asthma and Rhinitis.- Mechanisms of Action of ?2 Adrenoceptor Agonists.- Alkylxanthines and Phosphodiesterase 4 Inhibitors for Allergic Diseases.- Glucocorticoid Insensitive Asthma.- Recalcitrant Asthma.- Mechanisms...