What happens if there is too much dopamine present in the brain?

Dopamine is one of many important neurotransmitters in
brain tissue, these neurotransmitter chemicals interact with each other and relay
chemical messages from neuron to neuron as they pass from synapse to synapse. Dopamine
acts as a precursor for other neurotransmitters including adrenaline. In the frontal
lobe of the brain Dopamine helps control the flow of neuronal information to other ares
of the brain. Incoherent thought may be one symptom of Dopamine abnormalities. Dopamine
tends to balance out another neurotransmitter called serotonin. When serotonin levels
are low, dopamine levels rise and vice versa. An over abundance of dopamine may lead to
paranoid type behavior, the person may be overly suspicious of other people. The person
may isolate themselves because of feelings of mistrust. This interferes with normal
social interactions and can have negative impacts on social and love
relationships.