In either case, a drug dependent person will experience some form of withdrawal symptoms when drug use is discontinued. Physical dependence to inhalants can occur among chronic, heavy users. Withdrawal symptoms can include chills, cramps and hallucinations. Psychological dependence can occur with the use of any of these drugs. Freon and butane, often used in aerosol sprays, are also included in this group.
Many solvents are petroleum-based.
The initial effects of solvent intoxication resemble that of alcohol. Early on, users feel uninhibited and may become impulsive, violent or engage in sexually unrestricted behavior. Some of the more common physical symptoms occurring in the early stages include slurred speech, clumsiness, drowsiness, impaired thinking and decreased reflexes. Emotional instability, short term distortion of the senses, numbness and weightlessness may also occur. Some solvents may cause hallucinations and mood alternations.