to post an opinion
In mental health since there are very few if any physical tests if any available i.e. blood work/MRI/X-rays it is basically upto the medical professional to make the call on the diagnosis based on observations and evaluations done during a visit – many illnesses have similar symptoms that may be a cause for a diagnosis or misdiagnosis the same as would be with a physical illness where if you go for a second opinion for something that is possible to test i.e. stomach ulcer / fissures etc you may hear different opinions on treatment it is much more so on illnesses that is pretty much a grey area and can only be diagnosed by observing/hearing.
However not going to a medical professional just because there may be a misdiagnosis is preventing the patient the basic right of being helped … and just like any other medical issue if you are not happy there is always the option of getting a second opinion.
understanding that there are ramifications of a diagnosis not going is like making a person with a broken leg go up & down stairs.