Twisting the knee is a common cause of overstretched or torn ligaments of the knee. The knee may give out suddenly when the ACL is torn and there may be a popping sound upon injury. Symptoms of a torn ACL include knee pain, swelling, stiffness, and bruising.
Early symptoms of carbon monoxide poisoning such as headaches, nausea, and fatigue, are often mistaken for the flu because the deadly gas goes undetected in a home. Prolonged exposure can lead to brain damage and even death.
If anyone has symptoms of carbon monoxide poisoning, get emergency help. More than 20,000 Americans go to emergency rooms each year because of carbon monoxide poisoning, and more than 400 people die. Donât go back into the house until itâs safe. Your fire department can help you figure that out.