Pediatric acute-onset neuropsychiatric syndrome (PANS) is a condition characterized by the sudden onset of obsessive-compulsive disorder (OCD) or severely restrictive food intake, along with at least two additional neuropsychiatric symptoms. These symptoms can include anxiety, mood swings, irritability, sleep disturbances, and urinary issues. PANS is often triggered by infections, metabolic disturbances, or other inflammatory reactions.