A tweaker is a meth abuser who probably has not slept in 3-15 days and is irritable and paranoid. Tweakers are considered the most dangerous type of meth abuser to medical personnels, and law enforcement officers. Tweakers often behave or react violently and if a tweaker is using alcohol or another depressant, his negative feelings and associated dangers intensify. The tweaker craves more meth, but no dosage will help re-create the euphoric high, which causes frustration, and leads to unpredictably and potential for violence. To an outside observer a tweaker can appear normal. Their eyes can be clear, speech concise, and movements brisk. However, a closer look will reveal that their eyes are moving ten times faster than normal, their voice has a slight quiver, and their movements are quick and jerky. These physical signs are more difficult to identify if the tweaker is using a depressant. Tweakers are often involved in domestic disputes and motor vehicle accidents. They may also be present at "raves" or parties and they may participate in spur-of-the-moment crimes, such as purse snatchings or assaults, to support their habit.
Here are six safety tips for approaching a tweaker provided by the police