The phrase "adding to apprehension" is correct and usable in written English.
It can be used when discussing factors or situations that increase feelings of anxiety or fear.
Example: "The sudden changes in the project timeline are adding to apprehension among the team members."
Alternatives: "increasing anxiety" or "heightening concern".
The news of Ms. Nguyen's death only added to apprehension among staff members at the hospital, some of whom learned of her death while waiting to be treated at Lenox Hill.
The second theme was building on women's perception of breast cancer as an incurable disease associated with suffering and death, their fear of the risk of diminished femininity, husband's rejection and social stigmatization, adding to their apprehensions about breast health examinations.
Negotiations over casting were facilitated by computer wizardry, adding to his natural apprehension.
Houston's victory only added to the apprehension around the Penn State program.
We're all busy and it's easy to be a little tardy, but don't add to the apprehension that plagues every first tee by making your partners wonder if you're going to be there on time.
To add to the apprehension, this rural area has gone 71 days without rain and everyone keeps looking up at the Wolf Mountains, waiting for the next lightning storm to send them up in flames.
He added, "To me, most of our apprehensions of others is fear of unknown, once you know people from different faiths and understand that they are just like you, normal human beings with similar aspirations, problems, and similar day to day issues, it becomes irrelevant who and how you pray, eat or dress.
Apprehension about such meddling has added to concerns about whatever went on between Michael Flynn and various foreign officials during the Trump transition, before he became the President's national-security adviser.
Though Banksy works have shown up on private buildings, the Police Department has gotten no official complaints, a spokesman said, adding that apprehension was difficult because "we don't know who Banksy is, if he exists at all".
This added on to the apprehension of the already perplexed faculty still feeling ill-equipped and ready to take on the challenges of curriculum change.
