it's kinda crazy, but did you know that some mango skins contain the "poison" in poison ivy? it's act-u-all-ee called urushiol, and it's mostly found in the stem area. it's like suuuuuuuuuuuuuper rare/unheard of to be allergic to the flesh itself. make sure to wash the skin tonz before peeling 2 be safe lolz
if you reely want to get into specifics, take a look at this boatally fun infographik
Or if youre a mega nerd you can read this scientific journal haha nerd !!