Final answer:
Cocaine and crystal meth mimic the effects of schizophrenia, not Parkinson's disease, by causing increased levels of dopamine and inducing similar symptoms such as hallucinations and paranoia.
Step-by-step explanation:
Drugs like cocaine and crystal meth imitate the effects of schizophrenia to normal people. These stimulants cause increased dopamine neurotransmission in the brain, which can lead to symptoms similar to those experienced by individuals with schizophrenia, such as feelings of anxiety, hallucinations, and paranoia. On the other hand, Parkinson's disease is characterized by the loss of dopamine neurons, and its symptoms include tremor, slowed movement, and rigid muscles. Drugs for schizophrenia often work by decreasing dopamine levels, which inadvertently may cause Parkinson-like symptoms. However, the direct effects of cocaine and crystal meth do not mimic those of Parkinson's disease.