Thirty four warnings sings of drug use

Here are additional warning signs. The list comes from helpforteens.net. Neglected appearance/hygiene.
Poor self-image.
Grades dropping.
Violent outbursts at home.
Frequent use of eye wash.
Unexplained weight drop.
Drug paraphernalia.
Slurred speech.
Curfew violations.
Running away.
Skin abrasions. Hostility toward family members.
Chemical breath.
Glassy eyes. Red eyes.
Valuables missing.
Possessing unexplained valuables.
Stealing/borrowing money.
Change in friends.
Depression.
Withdrawal.
Apathy. Reckless behavior.
No concern about future.
Defies family values.
Disrespect to parents.
Lying and deception.
Sneaky behavior.
Disregards consequences.
Loss of interest in healthy activities.
Verbally abusive.
Manipulative/self-centered.
Lack of motivation.
Truancy.