Onset of symptoms: Here, you start experiencing the first signs of a cold, such as a sore throat ... Cennimo agrees, noting that people are considered contagious as long as they are symptomatic ...

Most people don’t know hypothermia and frostbite can set in within only minutes of exposure to cold temperatures.

While memory loss and cognitive decline are the well-known signs of dementia, this early sensory symptom could show up years ...