Cause analysis of allergy: Mango juice contains an ingredient called "aldehyde acid", which will stimulate the skin mucosa and cause allergies. The main manifestations of mango allergy are papules on the lips and around the lips, which are thin and dense, and the skin is dry and red. It is best to choose the mango that is fully ripe, cut it into small pieces with a knife and eat it to avoid contact with lips and facial skin. Wash your hands and face as soon as you finish eating mango. Wash the mango juice on your hands with clear water, and then wash your face. In addition, it is good to take anti-allergic drugs for mango allergies, but mango allergies are cumulative allergies. If you know that you are allergic to mango, the allergic symptoms will be more serious.