Yes sometimes they do prescribe plecebos.

Sometimes they do it to see if the person is acting sicker then they really are, or faking the disorders when the symptoms the person is descibing doesn't fit the diagnosising criteria and symptoms of that disorder that the person claims to have.

So they give a placebo to see what the persons reaction is. The person does not know they are getting a placebo. Then at the next appointment they check in with the person. If the person has the "placebo effect" of- yea every thing is cool now the medication works great. The psychiatrist knows the person did not actually have the problem they were complaining about. If the person comes to the follow up appointment swith the same or worse symptoms they then "change the medication or dosage and give the perosn the real medicaton.

This happens alot with people claiming they are DID. Its one of the ways professionals can rule in or out the possibility having this disorder vs having schizophrenia.. Medication will not fix the symptoms associated with DID -hearing voices, time loss, spacing out, switching and so on. Sometimes they will prescribe medication for a person who had DID not to take care of the DID but to take care of depression and anxiety. But medication will clear up the voices, paranoia, and so on associated with schizophrenia because schizophrenia is a chemical imballance of the brain mental disorder.