How does sensory overload fundamentally differ from simple annoyance?

Answer

Overload involves deeper physical/emotional reaction, while annoyance is transient irritation.

Annoyance is usually a transient feeling of irritation that passes once the input stops; sensory overload involves a deeper, more physical and emotional reaction, including agitation, fear, and inability to think clearly.

How does sensory overload fundamentally differ from simple annoyance?
causeSensoryperceptionsymptomoverload