What does the cryptic crossword clue "Each toddler after treatment is lacking feeling? (4,7)" mean?

The wordplay uses an anagram. anagram of EACH + TODDLER = COLDHEARTED The answer is COLDHEARTED.

Each toddler after treatment is lacking feeling? (4,7)

Daily Mail Cryptic #17241 | 12 Across | 2023-12-01 flower