A chronically high heart rate, even during periods of inactivity, does not automatically mean your teen is ill or using illicit drugs. Although marijuana, cocaine and other drugs can increase your teenâs resting heart rate, anxiety and overconsumption of caffeine can also elevate her resting heart rate to active levels.
Phantom smells, like burnt toast and burning hair, can be a sign of a stroke, but they can also be a sign of other conditions, explains NBC News. A tumor can also cause people to experience phantom smells, as can an infection in the brain. Keep Learning.
A quarter of cases come from upper respiratory-tract infections (which include colds and flu) and 30 per cent are caused by brain damage following an accident. Perhaps most worryingly, a loss of taste and smell can indicate the onset of brain illnesses such as Parkinsonâs or Alzheimerâs, 20 years before other classic symptoms appear.