A face full of bleeding sores. Rotting and missing teeth. A thin face and nervous, edgy demeanor.
These are signs of methamphetamine addiction.
Methamphetamine, or "meth" is a central nervous system stimulant. It causes sleeplessness, suppresses the appetite, increases physical activity, causes rapid breathing and a fast, sometimes irregular, heartbeat. it can hike blood pressure, and make users feel excessively warm.