Schizophrenia is a chronic mental disorder with affirmative and harmful symptoms. Affirmative symptoms involve thought disorder, hallucinations, movements disorder and delusion, while the harmful symptoms are known as the deficiency of standard behaviours which cannot only be found in schizophrenia but also depression. Depression is a common serious mood disorder, it has common features with schizophrenia, and they both share the same severe symptoms that affect feelings, thinking, manners of handling daily activities and also as sleeping, eating and inability to maintain work and relationships
From my research, I gathered that depression and schizophrenia are both predictors of attempted suicide, essentially linked to the quality of life and many young people experiencing psychosis are at the highest risk of suicide and more often are diagnosed with depression. Thus, it was deemed necessary that depression should be regularly assessed in schizophrenia with related symptoms and consensus for mental illness is uncertain, unlike other physical illness.
Genetics justification, concentrated on the impact of genes, brain damage and dopamine, while environmental: justification investigates the influence of stress or social remoteness