Symptoms associated with substance abuse.

- Changes in behavior, such as increased secrecy or lying
- Neglecting responsibilities or obligations
- Mood swings or sudden changes in personality
- Physical symptoms, such as bloodshot eyes, tremors, or slurred speech
- Changes in sleep patterns or appetite
- Financial problems or sudden need for money
- Relationship problems with family, friends, or coworkers
- Legal issues related to substance use
- Withdrawal symptoms when not using the substance
- Increased tolerance to the substance, needing more to achieve the same effects.

Physical Symptoms

- Bloodshot eyes
- Pupils dilated or constricted
- Rapid or slow heart rate
- Increased or decreased blood pressure
- Sweating or chills
- Tremors or seizures
- Weight loss or gain
- Skin problems (e.g., acne, rashes)
- Gastrointestinal problems (e.g., nausea, vomiting, diarrhea)
- Respiratory problems (e.g., shortness of breath, coughing)

Behavioral Symptoms

- Changes in mood (e.g., irritability, depression)
- Anxiety or panic attacks
- Aggression or violence
- Paranoia or hallucinations
- Difficulty sleeping or excessive sleepiness
- Isolation or withdrawal from social activities
- Increased risk-taking behavior
- Lying or stealing to obtain drugs
- Neglecting personal hygiene
- Financial problems

Cognitive Symptoms

- Impaired judgment or decision-making
- Problems with memory or attention
- Difficulty concentrating
- Reduced motivation or energy
- Delusions or hallucinations (in severe cases)

Other Symptoms

- Withdrawal symptoms upon cessation of drug use (e.g., anxiety, sweating, hallucinations)
- Overdose (e.g., loss of consciousness, slowed breathing)
- Medical complications (e.g., liver damage, heart attack, stroke)

Note: The specific symptoms experienced can vary depending on the substance being abused, the amount and frequency of use, and the individual's overall health and circumstances.