Comedown.

About Comedown

The comedown, or crashing, is a phase of drug withdrawal that involves the deterioration in mood and energy that occurs when a psychoactive drug, typically a stimulant, clears from the blood in the bloodstream. The improvement and deterioration of mood are represented in the cognitive schema as high and low elevations; thus, after the drug has elevated the mood, there follows a period of coming back down, which often has a distinct character from withdrawal in stimulants. Generally, a comedown can happen to anyone as a transient symptom, but in people who are dependent on the drug, it is an early symptom of withdrawal and thus can be followed by others.