What is a common side effect of narcotic overdoses?

In cases of narcotic overdose, one of the significant side effects observed is convulsions. Narcotics, which are opioids, primarily affect the central nervous system by binding to opioid receptors, leading to profound sedation and respiratory depression. However, with an excessive intake, the balance can be disrupted, resulting in neurological disturbances such as seizures. This reaction may stem from a variety of factors such as decreased oxygen levels in the brain or direct effects on neural pathways.

The other options, while they can be associated with different medical conditions or drug interactions, are not typical outcomes of narcotic overdoses. Elevated heart rate and sweating may not directly relate to the primary effects of narcotics, while increased appetite is not consistent with the sedative properties of these drugs. Thus, convulsions stand out as a critical side effect that underscores the danger of narcotic overdose, highlighting the need for awareness and caution when administering these potent substances.