What are signs and symptoms of severe hypothermia?

Severe hypothermia is characterized by a body temperature that drops significantly, leading to a range of critical physiological and neurological changes. One of the hallmark signs of severe hypothermia is the absence of shivering, which is a natural response of the body to generate heat. When a person is in the severe stages of hypothermia, their body may become so cold that it cannot produce any heat through shivering.

In addition to the cessation of shivering, individuals may also experience significant impairment in motor function. This may manifest as an inability to walk or perform basic movements due to the body's compromised coordination and muscle control. As the condition worsens, these symptoms become more pronounced, indicating a critical need for immediate medical intervention.

The other options reflect signs that may be present in less severe stages of hypothermia or are not exclusive to severe cases. Excessive shivering typically occurs in the early stages of hypothermia as the body is still trying to warm itself. Confusion and nausea can occur in various conditions and are not definitive for severe hypothermia. Rapid heartbeat and shallow breathing might indicate stress or other medical issues but do not specifically characterize severe hypothermia. Therefore, the signs of no shivering and inability to walk are crucial