You are not imagining it. The pattern of a child getting sick — sometimes with what seemed like an ordinary illness — and then falling apart behaviorally and emotionally in the days that follow is one of the most common ways PANS and PANDAS first come to a parent's attention. Researchers believe that in children who develop these conditions, the immune system produces antibodies that mistakenly target brain tissue rather than clearing after the infection resolves. The result is inflammation in parts of the brain that control behavior, emotion, and movement. This is not a psychiatric breakdown or a parenting failure. It is a biological process expressing itself through the child's behavior. Write down the timeline as specifically as you can — when the illness started, when the behavioral changes began, and exactly what those changes look like — and bring that to a provider appointment.