The most common and most likely answer to this crossword clue is the 5 plus 3 letter word FIRST AID
I've seen this crossword clue in Independent
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More clues leading to the result FIRST AID
- Wood collected for treatment
- Tree needing serious treatment, initially
- Settled under tree to get medical attention
- Tree requiring steady treatment
- Tree beside grave gets emergency treatment
- Fair distance not half negotiated for medical treatment
- Tree remained in place, we hear, getting treatment
- Grave next to tree will get immediate attention
- Sedate patient? He might need it
- Is adrift at sea, needing immediate help
Buddy explains!

The straight part
We know that "medical treatment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case medical treatment = first aid.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.
Crossword Answer definitions
FIRST AID adjective- Of, or pertaining to, first aid.