Amphetamines are excreted slowly and cumulative effects may occur with continued administration. These effects may include high blood pressure and hallucinations. In regard to recreational use, the stimulation of the central nervous system usually causes an increase in motor activity and mental alertness, a mood elevation effect, a general sense of well-being and a decrease in appetite. Long term use can result in psychological dependency as well as a high degree of tolerance. Withdrawal often includes feelings of depression.
Death usually results from cardiovascular collapse or convulsions.
Insomnia Irritability Mental impairment Tendency to withdraw from social contact Teeth grinding Ulcers of the tongue and lips. Prolonged use of high doses can elicit symptoms of paranoid schizophrenia, including auditory and visual hallucinations and paranoid ideation. Ritalin is a central nervous stimulant that is often used in children and young adults with Attention Deficit Disorder. In these cases, it decreases motor restlessness and increases attention span. Abuse of Ritalin among college students is growing.