The most common and most likely answer to this crossword clue is the 8 letter word SEQUELAE
I've seen this crossword clue in Financial Times
S
E
Q
U
E
L
A
E
Buddy explains!

The straight part
We know that "consequences" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case consequences = sequelae.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SEQUELAE mean?
SEQUELAE noun- A disease or condition which is caused by an earlier disease or problem.
- That which follows; an inference or corollary.