Which condition is classified under mental disorders?

Schizophrenia is classified as a mental disorder because it affects a person's thoughts, feelings, and behaviors in a profound way. This condition is characterized by symptoms such as delusions, hallucinations, disorganized thinking, and significant impairments in functioning. The classification of schizophrenia as a mental disorder is supported by the criteria set forth in the Diagnostic and Statistical Manual of Mental Disorders (DSM), which emphasizes the cognitive and emotional disturbances indicative of this condition.

In contrast, scleroderma is a chronic autoimmune disease that primarily affects the skin and connective tissues, not falling under the category of mental disorders. Semenology refers to the study of semen, which is not related to mental health, while senescence refers to the process of aging and the gradual deterioration of functions, which again does not pertain to mental disorders. Therefore, schizophrenia is correctly identified as the condition that falls under mental disorders.