History of hay fever in China

Pollinosis is induced by pollen allergens, IgE-mediated and affects the respiratory system, cutaneous system, etc. Its prevalence is gradually increasing. The pollen map and calendar are acquired through pollen monitoring. Pollinosis is affected by meteorological factors and results in thunderstorm asthma. It is associated with food allergy, which can induce oral allergy syndrome and even anaphylaxis. In addition, pollinosis may progress from allergic rhinitis to asthma. Laboratory investigations for pollinosis include in vivo and in vitro tests. Pollen prevention, medication, and immunotherapy are the primary treatment modalities, and omalizumab is effective and safe.