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Outline the Use and Mode of Action of two biological (somatic) therapies (15 marks) Chemotherapy is often used to treat patients with mental disorders. The drugs used are classified into four main types, all of which operate on the Central Nervous System (CNS). These are; Anti-anxiety drugs, Antidepressant drugs, Antipsychotic drugs and Anti-manic drugs. Anti-anxiety drugs are used to reduce anxiety, muscle tension and help calm people with emotional disorders. Barbiturates were initially used for depression of the CNS. However, they were found to cause a lack of concentration, lack of co-ordination and slurred speech in some cases. They also had a tendency to cause addiction. Because of this, they were replaced by Benzodiazepams in the 1960's as these were more precise in their functions and so caused less side effects. Although, they tended to have a sedative effect and still had problems with increased dependency and tolerance. Anti-depressant drugs are...

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