What is a secondary disturbance

Answer: Depression

Explanation:

The primary disturbance comes before Secondary disturbance. During the first stage, issue is not much given thought until it graduate into a more pressing life threatening issue which is the secondary disturbance.

This is what I think.

depression

Explanation:

Getting upset (the secondary disturbance) about initially having been upset (the primary disturbance) tends to be both pervasive and elusive. The primary disturbance occurs (or is anticipated to occur) first, then comes secondary disturbance, since chronologically it occurs second.