Acrophobia (from the Greek: ἄκρον, ákron , meaning "peak, summit, edge" and φόβος, phóbos, "fear")

is an extreme or irrational fear or phobia of heights, especially when one is not particularly high up.

People experience a degree of natural fear when exposed to heights,

known as the fear of falling.

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“EXO’s Luhan refuse to fly back to Korea because of his acrophobia?”

It's the headline in every social media, Luhan had refused to come back to Korea just for the mediation between him and his past entertaiment just because he had to take airplane to Korea.

Riding an plane mean he will be in the sky for at least more than one hour and he can't even imagine it!

Yes, Luhan has acrophobia and it was all started because of that girl.