A mental health condition characterized by persistent false beliefs that are not based in reality.
Because delusional disorder is rated on a scale tied to how severely symptoms affect work and daily life, the most useful evidence directly documents that connection at each level.
For lower ratings (0%, 10%, 30%), medical records showing a confirmed diagnosis, notes about symptom frequency and severity, prescription records reflecting continuous medication, and your own statements about sleep problems, anxiety, or occasional difficulty concentrating at work all bear on these levels.
For a 50% rating, records showing flattened affect, speech abnormalities, impaired short- or long-term memory, or impaired abstract thinking are relevant. Treatment notes, neuropsychological testing, and statements from supervisors or coworkers about reduced reliability or productivity can reflect these criteria.
For 70% and 100%, clinical records documenting suicidal ideation, violence or impulse-control episodes, persistent delusions, disorientation, or neglect of personal hygiene are directly tied to those levels. Statements from family members, caregivers, or employers describing how your symptoms affect your ability to hold a job, manage relationships, or care for yourself can help show the degree of occupational and social impairment the regulation describes at those higher levels.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.