Dozens of students in Ohio needed medical attention on Friday after trying to eat some of the world's hottest chilli peppers.

Around 40 students tried to eat the ghost peppers during lunch break after an unidentified student brought them into Milton-Union middle school, the Dayton Daily News reported.

Five students were hospitalised and another 35 were treated for symptoms ranging from blotchy skin to hives, sweating and blurred vision. 

"We all drank like 10 cartons of milk," one student said, adding that they started becoming nervous after people around him started having nervous reactions. 

The ghost pepper is one of the world's hottest chili peppers, with the Scoville heat rating ranking it as being between 107 and 417 times hotter than a jalapeño and 10 times hotter than a habanero pepper. 

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