Patients search the symptom before they know the department. A page per complaint — the pain, the test, the wait — reaches them earlier than any page named after a medical speciality.
Waiting time is the deciding factor in private care and almost nobody publishes it. Saying how soon a first appointment is available beats a longer list of qualifications every time.
Health content is watched closely, and rightly so. Pages signed by the clinician, with registration number and date of last review, hold up to scrutiny and rank better than anonymous text.