Which of the following is true about warning signs of prescription drug misuse and addiction?

Warning signs of prescription drug misuse and addiction may include:

1. Changes in behavior, such as mood swings, irritability, paranoia, and aggression.
2. Keeping a supply of prescription drugs even after the original condition for which they were prescribed has resolved.
3. Doctor shopping or visiting multiple doctors to obtain multiple prescriptions for the same drug.
4. Taking higher doses of medication than prescribed or taking it more frequently than recommended.
5. Neglecting responsibilities at work, school, or home due to drug use.
6. Withdrawal symptoms when attempting to stop using the medication.
7. Financial problems due to spending excessive amounts of money on prescription drugs.
8. Physical signs such as drowsiness, slurred speech, and coordination problems.