Which symptom is NOT typically seen during stimulant withdrawal?

Heightened alertness is not typically seen during stimulant withdrawal because withdrawal from stimulants like cocaine or amphetamines often leads to a contrasting set of symptoms that reflect the body's adjustment to the absence of these substances. When individuals stop using stimulants, they commonly experience fatigue, increased appetite, and vivid unpleasant dreams as part of their withdrawal symptoms. Fatigue arises as the body's energy levels normalize after the overstimulation caused by stimulant use. Increased appetite is also common as the body seeks to restore balance after the appetite-suppressing effects of the stimulants. Vivid unpleasant dreams can occur as sleep patterns change and the brain attempts to regain normalcy. In contrast, heightened alertness, which is a key effect of stimulant use, diminishes during withdrawal, resulting in a state of reduced energy and increased lethargy. Thus, the symptom of heightened alertness stands out as one that does not belong in the context of stimulant withdrawal.