The following traits can be warning signs of addiction:

• Obvious changes in friends, appearance, hygiene
• Confused, apathetic, disoriented behavior
• Problems in school or at work, with the law or neighbors, poor attitude toward authority
• Lack of participation as a family member in activities or household tasks
• Preoccupation
• Unexplained need for money
• Erratic moods (easily angered, moody, uncooperative, sensitive)
• Dishonest, secretive
• Defensive, elusive, or withdrawn
• No longer involved in activities, sports, or hobbies
• Tardy to work or school, increased absences
• Smell of alcohol or marijuana on breath or clothing
• Compulsive behavior (computer, gambling)

Source: Unity Health System