We may be troubled and feel uncomfortable. But, on the other hand, it may be unknowingly, or the onset is sudden and random.
Sudden onset is our realization- it’s unlikely random. Instead, it is a sense of awareness – one honed over years of experience.
Pay attention. Is it true or self-manifested? If confirmed, we must address it. If it is something we alone have conjured, we must deal with it.
Each sense provides us with valuable information that the others cannot. We would not dismiss any of the five, and we can all do with optimizing our awareness and use of the sixth.