Which of the following is a potentially lethal symptom of strangulation?

Involuntary urination or defecation can be a potential indicator of severe physiological distress and brain ischemia caused by strangulation. When a person is strangled, pressure on the neck can obstruct blood flow to the brain, leading to a lack of oxygen (hypoxia). This deprivation can result in loss of bodily control functions, including the involuntary release of urine or feces. It reflects the seriousness of the situation and signals potential neurological impairment or death if pressure is not relieved.

While other provided symptoms may accompany strangulation, such as chest pain or severe headache due to potential trauma or stress, they do not specifically indicate a life-threatening response as clearly as involuntary involuntary urination or defecation does. Similarly, bluish skin discoloration can indicate reduced oxygen levels but does not necessarily show the critical impact on bodily functions indicative of imminent danger. Demonstrating understanding of these physiological responses is crucial in recognizing and responding to the threats posed by strangulation.