The reasons why someone may be allergic to mango include the presence of allergens in the mango, and the individual’s allergy-prone body. 1. Mango contains allergens: Mango belongs to the tropical fruit, more common in life, mango contains dihydroxybenzene, monohydroxybenzene and other substances, will produce stimulation of the skin mucous membrane, thus triggering allergic reactions. In addition, mango skin, also contains aldehydic acid, this kind of acidic substances, will produce stimulation reaction to the skin mucosa, thus inducing skin allergies. 2. Individuals belong to the allergic body: most of the people who are allergic to mango belong to the allergic body, there may be autoimmune deficiency, autoimmune system is damaged, etc., in contact with the allergenic substances, it is easy to induce the body IgE level increases, thus inducing the occurrence of allergic reactions. Usually, mango allergy is characterized by itching, erythema, rash, blisters and other symptoms, and in severe cases, respiratory difficulties may occur. It is recommended that people who are allergic to mango avoid eating mango, and if allergy occurs, go to a regular hospital in time for treatment.