Parkinson’s disease is the second most prevalent neurodegenerative disorder after Alzheimer’s disease. It is characterized by psychological disturbances and other symptoms that vary with the severity of the condition. Common mental health issues include anxiety, mood fluctuations, hallucinations, psychosis, depression, and cognitive decline. These psychiatric conditions should be taken into account when diagnosing Parkinson’s disease. Therefore, an accurate diagnosis before initiating treatment is essential, as overlooking these psychological aspects can lead to suboptimal care.