Chapter 17: Physical Treatments in Psychology

A primary challenge in this field involves distinguishing the actual physiological benefits of treatment from powerful placebo effects and the complexities of conducting double-blind controlled trials when medications produce noticeable side effects. The text categorizes major pharmacological tools, beginning with antipsychotic medications like phenothiazines, which revolutionized the management of schizophrenia by targeting central nervous system pathways to reduce hallucinations and thought disorders. It further examines minor tranquillizers, or anxiolytics such as benzodiazepines, highlighting their role in treating neurotic anxiety and their improved safety profile compared to older sedative options. The discussion on affective disorders focuses on antidepressant drugs, specifically tricyclic compounds that effectively treat endogenous depression and monoamine oxidase inhibitors (MAOIs) which, despite their efficacy for atypical symptoms, require strict dietary management to avoid dangerous interactions. Beyond medication, the chapter details the rapid therapeutic impact of electroconvulsive therapy (ECT) on severe psychotic depression and mania, explaining its physiological basis and common side effects like temporary memory impairment. The section on psychosurgery chronicles the transition from radical, historical lobotomies to sophisticated, modern targeted procedures like limbic leucotomy, which aim to alleviate intractable obsessions and chronic anxiety by interrupting specific neural circuits. Finally, the unique role of lithium salts as a vital prophylactic treatment for stabilizing manic-depressive illness is analyzed, emphasizing its success in preventing relapse. Together, these methods represent a potent, albeit complex, arsenal for addressing severe mental anguish, highlighting the ongoing shift toward more precise and evidence-based biological psychiatry.