Withdrawal symptoms associated with methadone can include but are not limited to body aches and muscle cramping, back aches, leg kicking, anxiety, chills, shivering or trembling, abdominal cramping, weakness, increased blood pressure, convulsions, insomnia, diarrhea, running nose, watery eyes, sneezing, sweating, pale and clammy skin, nausea and thoughts of suicide.
The use of hashish by a mother during the first month of breast-feeding can impair the infant's motor development.
PCP users may experience blurred vision, flicking up and down of the eye and drooling.
Many school districts in the United States have begun to test for abuse of illicit drugs, including steroids, and studies are currently underway to determine whether such testing reduces drug abuse.