Which type of drugs is likely being abused if a person suffers long periods without sleeping or eating?

When assessing the effects of various types of drugs, stimulants are known to significantly increase alertness and energy levels while simultaneously suppressing appetite. These substances elevate the levels of certain neurotransmitters in the brain, leading to prolonged wakefulness and a lack of need for food. For instance, drugs such as amphetamines and cocaine can result in prolonged periods of insomnia and minimal food intake, making it evident that a person might be abusing stimulants if they experience long durations without sleep or eating. This behavior is characteristic of stimulant use, as the stimulating effects can create a cycle of increased activity and energy that temporarily diminishes the body's natural signals for sleep and nutrition.