Distressing experience for amateur dropping ecstasy and dancing (6)

I believe the answer is:

trauma

I'm a little stuck... Click here to teach me more about this clue!

'distressing experience' is the definition.
(I've seen this in another clue)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for trauma that I've seen before include "hurt" , "Physical injury - powerful emotional shock" , "Emotional shock producing lasting effect" , "Physical injury (medical)" , "Extreme shock" .)

I've seen this clue in the Sydney Morning Herald.

Want a hint initially instead of a full solution? Install my app