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why PD patients are given dopamine -answer

Dopamine - A Sample Neurotransmitter

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One of the neurotransmitters playing a major role in addiction is dopamine. Many of the concepts that apply to dopamine apply to other neurotransmitters as well.
As a chemical messenger, dopamine is similar to adrenaline. Dopamine affects brain processes that control movement, emotional response, and ability to experience pleasure and pain.

Dopamine -continued link

http://www.utexas.edu/research/asrec/dopamine.html

Regulation of dopamine plays a crucial role in our mental and physical health. Neurons containing the neurotransmitter dopamine are clustered in the midbrain in an area called the substantia nigra . In Parkinson's disease, the dopamine- transmitting neurons in this area die. As a result, the brains of people with Parkinson's disease contain almost no dopamine. To help relieve their symptoms, we give these people L-DOPA, a drug that can be converted in the brain to dopamine.

Drugs can stimulate or fail to stimulate dopamine receptors

You are setting yourself up for one of those 3000 post threads. This is a tremendously simple yet complicated question. Yes dopamine does get replaced by dopa, But why isn't L-dopa the best feel-good drug there is, and why don't things like cocaine, which are so called dopamine releaser's cause euphoria in the PWP. This question needs the input of a seasoned neurologist, and it only brings more questions to the table:)

dearest cs,

I have more questions -then the doctors have answers...
yet this one seems to be just what it states -drugs in balance -
have correct effects on the human body -

drugs that are syntheticlly/ -made in the pharmacy are made imperfect therefore the drugs give us drug addictions and withdrawls like
the drug addict -it seems to have made all PD patients,
watch - AWAKENINGS : AGAIN?
I did and what I saw wasnt the disease, but the reaction of over stimulation of the nervous system - Robert DeNiro's portrayal brought me to tears and the realization -that the drugs in the begining were given at levels the good doctor was only guessing -hypothesizing
and he did this with a pharmacist preparing the correct dosages -

and what I saw was amazing -because it has happened to so many of us,
the drug that gave them some quality of life,
after some time - took that quality of life back,
dear cs -because of your great knowledge & education in chemistry, all I can see from many of your posts - that this may be your very same synopsis -
it is perfectly fine to tell the truth of what the drugs have done, and where they have fallen short...
that is we (PD paients) take the drugs -
we are the living labratory -who can vocalize it...
and therefore we need to voice it now or forever -hold our knowlegde to ourselves.
love
tena

the PD we suffer from today is rampant - it has been a fact -that during the GDNF clinical trial -all were helped, and all were harmed by the removming of the
protein glia serums/ that healed the brain and gave life back to the brain by neurogeneration

ie: amgen -
it took a theif like amgen to remove a not quite perfected way to heal the brain -yet none the less -it did no harm until bigpharma removed it from the patients.
the doctors code is -do no harm?

and dear cs - I have no more answers to give - just a thousand more questions. :D

Awakening -the film is awesome