Schizophrenia is often associated with a high level of the neurotransmitter dopamine.
Dopamine
It is too simplistic because not everyone who has too much dopamine or too little serotonin develops a disease, and because factors other than neurotransmitters influence those diseases.
That is one of the theories. The other theory is tied to the function of dopamine. Dopamine inhibits another chemical called GABA. Without any GABA dopamine doesn't really do anything. The other theory is that they have normal levels of Dopamine and low levels of GABA. These theories came about by the observation that anti-dopamine drugs help the symptoms. The simple answer is we're not quite sure yet.
An over-abundance of dopamine is thought to contribute to the development of schizophrenia.
Parkinson's disease. The associated neurotransmitter is Dopamine.
too much fluoride
There isn't an opposite of ADHD par say. Schizophrenia would be the chemical opposite of ADHD since it involves too much dopamine in the brain as opposed to little dopamine in individuals with ADHD.
Acetylcholine( Ach) is a neurotransmitter.In parkinsonism there is a marked drop of dopamine level and Ach is indirectly associated with dopamine. there is a constant balance between dopamine and Ach.When Ach level increases ,dopamine level falls leading to parkinsonism like symptom
because dopamine in your body has released too much caused by the molocules in the marijuana
Cocaine is a dopamine reuptake inhibitor, causing a build-up of dopamine in the brain. That build-up is associated with the euphoric sensation often referred to as a "high."
Flooding, and loss of topsoil.