At which age did that start? For me at 25 I had my first true panicked state while flying which coincided with being afraid of being on highrises + all bridges

At which age did that start? For me at 25 I had my first true panicked state while flying which coincided with being afraid of being on highrises + all bridges over Thames in London. This all also coincided with panic attacks in crowded theatres. I am currently 27 and it’s getting better. But damn it freaked me out the first time and when it persisted - I had been anxious before, but could control that. But I agree - I myself think it’s pure anxiety which is disconnected from specific phobias; it’s just somehow triggered by specific high-level concepts.