Biological Approach - Therapy
Chemotherapy is the name used to describe the use of psychoactive drugs to treat mental disorders.
Link - The biological approach believes that one cause of mental illness is chemical imbalances in the body. Chemotherapy worls by addressing this imbalance.
Example 1: Schizophrinia
- Patients have too much dopamine in the brain (Dopamine Hypothosis)
- "Anti-psychotics" reduce the effects of dopamine by blocking its transmission from one neuron to the next.
- Two of the most commonly prescribed anti-psychotics are "conventional" and "atypical"
Biological Approach - Therapy continued
- Bind to the D2 receptor (tight and long lasting) and block dopamine transmission. Thus effectively reduces levels of dopamine in brain
- Newer drug with less side effects. these work by temporarily binding to the D2 receptor (so ultimately allowing for normal dopamine transmission)
- Atypical Anti-psychotic are favoured because the drug allows for normal dopamine transmission and there are less side effects (e.g. Tardive Dyskinesia) or risk of ESP
- Also the drug act on serotonin systems and other systems in brain. Perhaps this is why drug treats positive and some negative symptoms of schizophrenia