Psychological problems Study Guide

Mental health refers to our emotional, psychological, and social well-being. It affects how we think, feel, and act. Just like physical health, mental health can fluctuate. Good mental health involves being able to cope with the stresses of life, realise one's own abilities, learn and work well, and contribute to one's community. Mental illness, on the other hand, refers to health conditions involving changes in thinking, emotion, or behaviour (or a combination of these) that are associated with distress or impaired functioning. It's important to understand that mental illness is not a sign of weakness or a character flaw.

The prevalence of mental health conditions indicates how common they are within a population. Statistics show that mental health issues are widespread; for example, one in four people will experience a mental health problem at some point in their lives. These figures highlight the scale of the challenge and the need for greater understanding and support.

Stigma around mental health refers to negative attitudes and discrimination directed towards individuals with mental illness. This stigma can be overt, like stereotyping or discrimination, or subtle, such as internalised shame. Stigma often prevents people from seeking help due to fear of judgment or rejection. This can lead to significant social effects. People with mental health conditions may face isolation, difficulty finding or keeping jobs, housing discrimination, and strained relationships. They might internalise the negative perceptions, leading to lower self-esteem and self-stigma. Understanding these interconnected aspects is crucial for promoting better mental health support and reducing the barriers people face.

Schizophrenia is a severe and chronic mental disorder affecting thinking, emotion, and behaviour. People with schizophrenia may appear to have lost touch with reality, significantly impacting their daily lives. Key characteristics, often grouped into positive and negative symptoms, help in diagnosis. Positive symptoms are an excess or distortion of normal functions, such as hallucinations (seeing or hearing things that aren't there) and delusions (fixed, false beliefs). For example, a person might believe they are a famous historical figure or that people are trying to harm them. Disordered thinking, where thoughts are jumbled or illogical, is another common positive symptom. Negative symptoms involve a reduction or absence of normal functions. This can include avolition (lack of motivation or drive to perform daily activities), alogia (poverty of speech or reduced verbal output), and anhedonia (inability to experience pleasure). Affective flattening, where emotions are expressed in a blunted or flat manner, is also a negative symptom. Biological explanations for schizophrenia often focus on genetics and neurotransmitter imbalances. The genetic explanation proposes that people inherit a predisposition to schizophrenia, with twin and adoption studies showing higher concordance rates for schizophrenia in genetically related individuals. While genes increase vulnerability, environmental factors are also believed to play a crucial role in triggering the disorder. The dopamine hypothesis is a prominent neurotransmitter explanation, suggesting that an excess of dopamine activity in certain brain areas contributes to schizophrenia. Early versions focused on too much dopamine, especially in subcortical brain regions, which might explain positive symptoms. Later versions acknowledged that low dopamine in some cortical areas might explain negative symptoms. This imbalance affects how the brain processes information, leading to the symptoms seen in schizophrenia.