How do I solve 15 down in Daily Telegraph Cryptic 31246?

Question

Accepted Answer

15 down reads "Loony urge resolved in doctor's study?" (9 letters); the answer is NEUROLOGY. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

Loony urge resolved in doctor's study? (9)

15D — Loony urge resolved in doctor's study? (9) — NEUROLOGY