Final answer:
Neuroleptic drugs are primarily used to treat symptoms of schizophrenia by blocking dopamine receptors. They do not cure the disorder, and if discontinued, the symptoms typically return.
Step-by-step explanation:
Among the options provided regarding the nature of neuroleptic drugs, the following is true:
d) If an individual with schizophrenia stops taking neuroleptic drugs, the symptoms return.
Neuroleptic drugs, also known as antipsychotics, are primarily used to manage symptoms associated with conditions like schizophrenia by blocking dopamine receptors, thereby decreasing dopamine neurotransmission in the brain. While they can be effective in treating symptoms of the disorder, they do not cure the underlying causes of schizophrenia. When a patient discontinues their use, the symptoms often return.