Wounded by scorpion, say, beginning to go crazy, upset (5)
I believe the answer is:
stung
'wounded' is the definition.
(I've seen this before)
'beginning to go crazy upset' is the wordplay.
'beginning to' indicates taking the first letters.
'crazy' becomes 'nuts' (nuts can informally mean crazy or mad).
'upset' says the letters should be written in reverse.
The initial letter of 'go' is 'g'.
'g'+'nuts'='gnuts'
'gnuts' back-to-front is 'STUNG'.
'by scorpion say' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for stung that I've seen before include "Attacked by, eg, a wasp" , "cheated" , "Bitten, pierced" , "Overcharged" , "Wounded by a bee or wasp" .)