Some common symptoms of alcohol or drug dependence include:
- Using a substance to cope.
- A lack of interest in social activities unless it involves alcohol and/or drugs.
- Sudden changes to your mood, such as anger or irritability.
- Feeling fearful or anxious for no apparent reason.
- Problems with work, school, family, or friends.
- Trouble sleeping or insomnia.
- Feeling ill when you go without the substance for some time (substance withdrawal symptoms).