Many of the following warning signs may accompany cocaine use. If you, a friend, or loved one exhibits one or more of the following patterns, professional help is strongly recommended. *Sudden, inexplicable mood swings ranging from euphoria to depression. *Erratic performance at work or at school. *Frequent absenteeism from work or school (usually after payday or before or after the weekend). *Continuous money problems. *Disappearance of valuable goods from the home. *Brief, frequent trips to a bathroom or private room to cover up usage. *Opposite behavior (i.e. a reserved person who becomes overly gregarious and talkative, etc.) ATTENTION: This is only signs to look for; many different conditions also possess this signs. Only drug screen test will give you the most precise result.