Schizophrenia

• Schizophrenia is a chronic and severe mental health disorder that affects how a person thinks, feels, and behaves.

• It is characterized by episodes of psychosis, including hallucinations, delusions, and disorganized thinking.

Schizophrenia visuals

Causes

1. Genetic Factors: Strong genetic component; having a close relative with schizophrenia increases the risk.

2. Neurobiological Factors: Abnormalities in brain structure and neurotransmitter systems, particularly dopamine and glutamate.

3. Environmental Factors: Prenatal exposure to infections, malnutrition, or stress, and psychosocial factors.

4. Substance Use: Use of psychoactive or psychotropic substances can trigger or worsen symptoms.

Symptoms

1. Positive Symptoms: Hallucinations (hearing voices), delusions (false beliefs), thought disorders, and movement disorders.

2. Negative Symptoms: Reduced emotional expression, lack of motivation, social withdrawal, and neglect of personal hygiene.

3. Cognitive Symptoms: Impaired executive function, attention, memory, and difficulty understanding or using information.

Diagnosis

1. Clinical Evaluation: Based on a detailed history and symptom assessment, often using criteria from the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition).

2. Mental Status Examination: To assess the individual's thought processes, mood, and behavior.

3. Imaging and Laboratory Tests: To rule out other medical conditions or substance abuse that might cause similar symptoms.

Pathophysiology of Schizophrenia

1. Dopamine Hypothesis: Hyperactivity of dopamine D2 receptors in the mesolimbic pathway contributes to positive symptoms; hypoactivity in the prefrontal cortex leads to negative symptoms.

2. Glutamate Hypothesis: Dysregulation of glutamatergic neurotransmission, particularly NMDA receptor hypofunction.

3. Neurodevelopmental Factors: Abnormal brain development and connectivity, influenced by genetic and environmental factors.

Treatment

1. Medications: Antipsychotics are the mainstay of treatment. Typical antipsychotics (e.g., haloperidol) and atypical antipsychotics (e.g., risperidone, olanzapine) help manage symptoms.

2. Psychotherapy: Cognitive-behavioral therapy (CBT) for psychosis, supportive therapy, and family therapy.

3. Social and Vocational Rehabilitation: Programs to improve social skills, vocational training, and employment support.

4. Hospitalization: In severe cases, to ensure the safety of the patient and others.

5. Community Support: Peer support groups and case management services.