What condition is better to have: Parkinson's DIsease or Schizophrenia with!

You are correct in saying that currently there is no definitive treatment for Schizophrenia with negative symptoms, just as there is no cure for Parkinson's disease.
http://www.psychiatrictimes.com/schizoph…

Because the symptoms of Schizophrenia with negative symptoms are so similar to the symptoms which many people with Parkinson's (PwPs) experience but without many of the motion disorder symptoms it sounds as if the logical choice would actually be Schizophrenia with negative symptoms. The problem is that we do not know what type of schizophrenia he has with the negative symptoms.
http://www.schizophrenia.com/diag.php
http://www.health.harvard.edu/fhg/update…

My husband has PD and I can tell you that his list of symptoms is long although at first only one was serious enough to impact negatively. Slowly other symptoms developed or became worse to the point including PD depression which has some of the same elements as Schizophrenia with negative symptoms.

The depression your friend feels could possibly be caused more by feeling helpless and hopeless about having a condition with no cure than even the schizophrenia itself. (Snake eating tail)
http://www.pdrhealth.com/disease/disease…

What prompts the suspicion that your friend might have PD instead of Schizophrenia? Did the diagnosing psychiatrist suggest the possibility? OR did you consider it from your reading? Your friend needs a neurology appointment ASAP because this form of schizophrenia could be a differential diagnosis. If indeed he has PD, he needs to begin treatment on appropriate meds (not necessarily dopaminergics in the early stage - possibly rasagiline which might slow progression)

Both conditions can have a serious impact upon quality of life but as PD is a chronic, progressive, incurable neurodegenerative disease, you can expect that it will continue to become worse.
http://parkinsonsfocustoday.blogspot.com…

With Schizophrenia there is some limited treatment which can help people adjust to work, to interact and to survive.
http://www.medicinenet.com/schizophrenia…

In PD, the ability to work may gradually disappear as symptoms increase and medications are less effective. For some PwPs there is the option of Deep Brain Stimulation surgery down the line for some motor symptoms. At this point the targeting will not improve speech or cognitive function for most patients...in fact these skills may decline. And stem cell research pronouncements are premature - there are some issue to resolve. And not all patients will benefit from this treatment as PD is actually a cluster of syndromes. Other PD research is moving forward with other targets.

When comparing PD to Schizophrenia with negative symptoms, I don't see the PD vision problems (difficult to treat), constipation (although that is often a medication side effect in any disease) urinary issues, difficulty swallowing (leading to choking which leads to aspiration pneumonia a leading cause of PD death). Nor do I see stiffening and slowness of movement, postural instability which can lead to falls (another leading cause of PD death) I don't see a condition which may cause a much earlier death in Schizophrenia although I am sure that it can.

There is no question that many of the precursor and early symptoms of PD are similar to symptoms of this form of schizophrenia. And I would certainly not wish either condition on anyone. We know that it will probably be several years before PD has a cure but I am not liking the limited research for schizophrenia (of unknown type) with negative symptoms.

In PD it is imperative that there be a caregiver as the disease moves out of initial stages. It would be very important in schizophrenia as well.

So how do you choose? It is a cruel twist of nature and environmental triggers and whatever unknown factors are present as to have either condition. But in the final analysis, there is a better chance of effective treatment in some forms of schizophrenia.
http://helpguide.org/mental/schizophreni…

If I was given a choice, I would DEFINITELY prefer the Parkinson's, because stem cell treatments for Parkinsons are developing rapidly. http://www.stemcellspuhua.com/s31.html.

Schizophrenia is much more difficult to treat.

Neither are 'better to have'. How can you even ask that?!