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.
Carbon monoxide poisoning. (Redirected from Gas poisoning) Carbon monoxide poisoning occurs after breathing in too much carbon monoxide (CO). Symptoms of mild acute poisoning include lightheadedness, confusion, headache, feeling like the world is spinning, and flu-like effects. Larger exposures can lead to toxicity of the central nervous system and heart, and death.