1, plant pollen: Artemisia plants produce a lot of pollen during the flowering season, and these pollens are the main cause of allergies. In the pollen season, sensitive people are prone to allergic rhinitis, allergic conjunctivitis and other symptoms.

2, volatile compounds: Artemisia plants produce certain volatile compounds, these compounds may also trigger allergic reactions.

3, certain foods: some parts of the Artemisia absinthium plant, such as leaves and stems, are used by humans for cooking and medicinal purposes, and these foods or herbs may also cause allergic reactions. Allergic symptoms may include breathing difficulties, skin rashes, and gastrointestinal distress.