Continuing to take a drug after it’s no longer needed for a health problem.
Needing more and more of a substance to get the same effects (called “tolerance”), and you can take more before you feel an effect.
Feeling strange when a drug wears off. Maybe shaky, depressed, sick to the stomach, sweating, or have headaches, tired or not hungry. In severe cases, confused, have seizures, or run a fever.
Can’t stop yourself from using the drug, even if you want to. You are still using it even though it’s making bad things happen in your life, like trouble with friends, family, work, or the law.
You spend a lot of your time thinking about the drug: how to get more, when you’ll take it, how good you feel, or how bad you feel afterward.
Having a hard time setting limits for yourself.
Lost interest in things once enjoyed.
Trouble doing normal daily things, like cooking or working.
Driving or doing other dangerous things (like use heavy machines) when you are on the drug.
Borrowing or stealing money to pay for drugs.
Hiding the drug use or the effect it is having on you from others.
Trouble getting along with co-workers, teachers, friends, or family members. They complain more about how you act or how you’ve changed.
Sleeping too much or too little, compared with how you used to. Or you eat a lot more or a lot less than before.
Looking different. You may have bloodshot eyes, bad breath, shakes or tremors, frequent bloody noses, or you may have gained or lost weight.
A new set of friends with whom you do drugs and go to different places to use the drugs.
Going to more than one doctor to get prescriptions for the same drug or problem.
Looking in other people’s medicine cabinets for drugs to take.
Taking prescribed meds with alcohol or other drugs.
Changes in personality and behavior like a lack of motivation, irritability, and agitation
Bloodshot eyes and frequent bloody noses
Shakes, tremors, or slurred speech
Change in daily routines
Lack of concern for personal hygiene
Unusual need for money; financial problems
Changes in friends and activities