A paranoid delusion is a false belief that someone is being targeted or persecuted by others. Individuals experiencing this condition may think that people are plotting against them, spying on them, or trying to harm them, despite a lack of evidence. This type of delusion is often associated with mental health disorders, such as schizophrenia or delusional disorder. These beliefs can lead to significant distress and impact daily functioning. People with paranoid delusions may withdraw from social interactions, become suspicious of friends and family, or engage in defensive behaviors. Treatment typically involves therapy and medication to help manage symptoms and improve quality of life.