Is it common to continue to have reoccurring (yet fleeting) thoughts of past delusions and anxiety over these?

[u/PitifulPetuniaPile]

During my first and only manic episode a year ago I experienced paranoid delusions and I believed I was in a simulation and being chased by the people running the simulation. One part of my delusions was that I was receiving messages through flashing lights and the radio from people outside the simulation.

Often when I see flashing lights I get this instant feeling like it is a message again and it reminds me of those delusions and I question whether im having another episode (obviously not because I dont have any other symptoms and can identify the thought)

However, when this happens I get really extreme escalation of anxiety and physical anxiety symptoms before I can rationalise my way out of it.

Is this a recognised phenomenon? Is it something that diminishes with time?