sentences:  Comedown (drugs)
  
  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.The improvement and deterioration of mood (euphoria and dysphoria) are represented in the cognitive schema as high and low elevations; thus, after the drug has "elevated" the mood (a state known as a high), there follows a period of "coming back down," which often has a distinct character from withdrawal in stimulants.