Which of the following symptoms is NOT associated with mercury poisoning?

Mercury poisoning is known to cause a variety of neurological and physical symptoms due to the toxic effects of mercury on the body. Common symptoms include memory problems, muscle weakness, and gastrointestinal issues like nausea and vomiting.

Memory problems arise because mercury can adversely affect cognitive functions, leading to issues with concentration and recall. Muscle weakness is another symptom because mercury can impair the peripheral nervous system, causing issues with motor control and strength. Nausea and vomiting often occur due to mercury's irritating effects on the gastrointestinal tract, as well as its potential to disrupt normal bodily functions.

In contrast, increased appetite is generally not associated with mercury poisoning. In fact, many poisonings and toxicities lead to a decrease in appetite rather than an increase, as the body responds to the toxic substances in a way that can cause gastrointestinal discomfort or neurological changes that do not promote eating. Therefore, the correct answer to the question is that increased appetite is the symptom that is not typically related to mercury poisoning.