1.   Scratch my back - I have an itch.

2.   He has an itch to travel.

3.   Because he had an itch that needed scratching.

4.   After one year of pure academia, he realized he still had an itch that needed scratching.

5.   But he also had another itch.

6.   But he had an itch.

7.   Don is a law school professor, but he has an itch to return to the fray and redeem himself for a large case lost.

8.   He still has the itch, but lingering questions in his background check for Agriculture Secretary could harm his political hopes.

9.   I hooked up with a childhood friend who had an itch for the road.

10.   I still enjoyed newspaper work, but had the itch to explore another career.