Several years ago, I developed a bad allergic reaction to mango. Hyper sensitive skin that will rash and welt with the slightest irritation, such as sitting in a car and wearing a seat belt. This will last for over a month. I carry an EpiPen in case my throat swells shut. I know allergies can come and go, so I may no longer be allergic, but I dare not find out.
Mango skin has a similar allergen as that in poison ivy, poison oak and poison sumac. My sister cannot touch the skin w/o getting a rash. However, if it's already peeled she can eat it w/o issue. I understand this is not uncommon:
Of this I was aware, and thanks for bringing it up for general knowledge! For me, oddly, I can walk through poison oak no problem, as long as I don't have an open cut. Near a cut, the area will get all "poison-oaky" and rash and itch still.