Affective disorders are a class of mental illnesses fundamentally rooted in emotions that impact the nervous system. These conditions pose significant harm not only to the individual but also to others and society at large. Do you understand the symptoms of affective disorders? What kind of illness is depressive affective disorder? Let's explore this further below!
Mood disorders are psychiatric conditions directly linked to emotions, manifesting various manic and violent tendencies alongside shifts in mood.
During depressive episodes, individuals experience pessimism, loss of interest, and diminished energy leading to slowed movement and thought processes—this is termed a depressive episode or depression.
1. Causes
The exact causes of this disorder remain unclear.Primary affective psychosis shows a positive family history in 23–29% of cases, or even higher, suggesting a possible genetic link.
Family studies reveal that relatives of individuals with affective psychosis have a prevalence rate 10 to 30 times higher than the general population, indicating a probable genetic component.Personality traits may also play a role in the etiology of affective psychosis. Individuals with hypomanic tendencies often exhibit cheerfulness, enthusiasm, strong ambition, high energy, optimism, and frequent mild mood elevation. Such individuals are prone to developing hypomania or mania.
Individuals with depressive predispositions tend to be quiet, serious, and conscientious, often prone to melancholy and negativity when faced with setbacks. They frequently experience mild depressive moods and are susceptible to developing depression.
Over half of patients experience precipitating factors before onset, such as sudden disasters, loss of loved ones, romantic rejection or marital dissatisfaction, work-related issues, or interpersonal tensions. Physical factors like infections, poisoning, childbirth, or endocrine disorders may also play a role.
These factors may be precipitating, and their association with primary affective disorders is likely coincidental at best—at most, they serve as triggers for affective mental disorders!
Secondary affective psychosis may arise from other conditions. Schizophrenia, anxiety neurosis, alcohol intoxication, and certain medications (e.g., steroids) can induce depressive states, while secondary mania occasionally occurs post-surgery or following steroid use.
2. Pathogenesis
The pathogenesis of affective psychosis remains poorly understood. Given the diencephalon's critical role in emotional regulation, dysfunction in this region—particularly the hypothalamus—is hypothesized to underlie affective psychosis.
Sleep disturbances, autonomic symptoms, and endocrine alterations suggest potential hypothalamic dysfunction.Surgical stimulation near the third ventricle or of the hypothalamus can induce euphoria and flight of ideas. Lesions in the diencephalon, such as inflammation, trauma, or tumors, may cause periodic episodes of depression and elation.
These findings suggest the diencephalon may play a significant role in the pathogenesis of this disorder. However, autopsies of patients with affective psychosis have not revealed organic morphological changes in the diencephalon.
3. Pathological Hazards
Psychosis refers to a distinct group with impaired brain neural function, including individuals with high educational attainment or exceptional intelligence in specific domains. Due to abnormalities in certain neural components, they are classified as vulnerable. Many patients, lacking timely treatment, inflict lifelong regret upon themselves and their families.
① Personality Alteration
Following onset, patients often exhibit pronounced personality changes and abnormal behaviors—the most evident harm of psychosis. Individuals who were once warm and sociable may become cold, distant, and reclusive, preferring solitude over interaction. They may avoid relatives and friends while harboring hostility, exhibiting laziness, and disregarding discipline.Or a previously well-mannered person may become rude, quick-tempered, and disrespectful.② Neurological and Psychiatric Harm
Patients may also exhibit symptoms resembling neurological disorders, damaging their physical health—another common harm of mental illness. Symptoms include headaches, insomnia, fatigue, poor concentration, emotional instability, diminished work or study capacity, and hysteria-like manifestations. Mental excitement occurs easily during mental exertion, with heightened sensitivity to sound and light at times.