Which of the following is a common sign associated with stimulant use?

A common sign associated with stimulant use is dry mouth and sweating. Stimulants, such as amphetamines and cocaine, increase the body's metabolic rate and stimulate the central nervous system, which can lead to heightened physical activities. This increased activity often results in symptoms like sweating due to an elevated heart rate and body temperature.

Additionally, dry mouth occurs because stimulants can cause a reduction in saliva production. This combination of increased perspiration and dryness in the mouth is considered characteristic of stimulant use. Understanding these signs is crucial for recognizing substance use and can aid in responding appropriately in field situations.