"initial anxiety" is a correct and usable phrase in written English.
You can use it to refer to a feeling of anxiety that arises when first encountering a new situation or set of circumstances. For example, "He experienced initial anxiety when starting his first day of work."
The initial anxiety of the diagnosis and treatment initiation period may have been ameliorated by subsequent familiarity and supportive psychosocial care provided by the clinical service teams.
Some have found their initial anxiety all too justified.
Despite Maria's initial anxiety about teaching the suicide lesson, her student also ended up fully participating in the class, though from a purely academic perspective.
Now that some of the initial anxiety about "The Quiet American" has subsided, talk centers mainly on whether Mr. Caine will be nominated for an Academy Award for his performance as a jaded British journalist.
Then Cambridge itself, where — despite a little initial anxiety about being, as he says, "found out" — he finds himself deeply at home, both in the rituals of the university and in the extracurricular theatrical activities so plentifully available.
Partly because of my initial anxiety, and partly because things went much better than hoped – he was both thoughtful and generous in his answers – we talked pretty intensely on a range of subjects for more than two hours.
Their initial anxieties have not been so banal as the weather, he adds.
My initial anxieties were predictable: when the first hint of stubble appeared on my face, who would teach me to shave?
It also suggested that the dysphoria-mediated by these systems may in fact be caused by an initial anxiety-like response during the CRF or stress experience.
Results: We showed that age, initial expectations, anxiety and depression was significantly related to the total score of satisfaction with hospital care.
The results demonstrated higher initial maternal anxiety scores in the burn, compared to the fracture and non ill/injured groups, which remained comparatively high 6 months later even though they decreased over time.
