Neuroimmune-driven abrupt neuropsychiatric symptoms in children: preventing pathological fear consolidation.

Pediatric Acute-onset Neuropsychiatric Syndrome (PANS) is defined by an abrupt onset of neuropsychiatric symptoms, traditionally viewed through the lens of obsessive-compulsive behaviors. However, it is also characterized by a state of extreme fear. While medical management addresses the biological triggers, this period creates a high-stakes emergency in human fear-learning that remains unaddressed by standard protocols. The current gold standard, exposure and response prevention (ERP), is theoretically mismatched to this unconditioned fear state. How do we help children endure and learn from pre-reflexive fear that is not cognitively mediated, not titratable, involuntary, and remains at peak without habituation? While we wait for the child to become "stable enough" for therapy, primitive learning is already occurring. The question is whether that learning is therapeutically guided or left to raw survival. This conceptual paper proposes Fear Rebalance Therapy (FRT), a theoretical framework requiring empirical validation. It is a developmentally unfolding framework that integrates co-regulation, survival learning and inhibitory learning principles. FRT guides the child to learn the safety of the external world even while the body signals imminent threat. Many of the initial symptoms may be reconceptualized as a threat-dominant physiological state, leading to a cascade of defensive reactions. The PANS index episode represents a critical branch point. Without guided learning, incidental conditioning can lead to chronic, sensitized disability. FRT aims to help children learn to regulate their emotional responses to these internal alarms. This framework proposes that while neuroimmune responses trigger the crisis, the nature of the learning during that crisis may determine trajectory. Early psychological intervention should be an active component of crisis management rather than a post-crisis adjunct to medical care. Importantly, FRT addresses psychological learning processes occurring during the acute episode, not the underlying neuroimmune mechanisms, which remains the domain of medical management.