Psychiatric disorders in aging populations include depression, anxiety disorders, cognitive impairments like dementia, and late-onset schizophrenia. Prevalence of psychiatric disorders often increases with age due to factors like biological changes, chronic illness, and social isolation. Diagnosis can be complex in older adults due to overlapping symptoms with medical conditions and age-related cognitive decline. Treatment typically involves a combination of pharmacotherapy, psychotherapy, and social support tailored to the unique needs and challenges of elderly patients. Integrated care approaches involving healthcare providers, caregivers, and community resources are essential in managing psychiatric disorders and improving quality of life in aging populations.