Which of the following is NOT a symptom of heroin withdrawal?

In the context of heroin withdrawal, increased appetite is typically not a symptom associated with the process. During withdrawal, individuals experience a range of uncomfortable physical and psychological symptoms as the body reacts to the absence of the drug. Common withdrawal symptoms include cramping, which can occur due to gastrointestinal distress; runny eyes and nose, reflecting bodily responses similar to flu-like symptoms; and agitation, often resulting from anxiety and discomfort as the body adjusts to functioning without heroin.

In contrast, increased appetite is generally seen as a symptom of recovery rather than withdrawal. During withdrawal, individuals may experience nausea, vomiting, and other gastrointestinal issues that can suppress appetite rather than increase it. Therefore, the presence of increased appetite distinguishes it from the other withdrawal symptoms, making it the correct answer in identifying which symptom is NOT typical during heroin withdrawal.