Lead with the timeline, not the diagnosis. Rather than opening with "I think my child has PANDAS," describe what you observed: the specific date symptoms appeared, how rapidly they escalated, and what the full symptom picture looked like. Let the clinical picture speak first. Bring written documentation — a dated timeline of symptom onset, tracking data if you have it, a list of what has and hasn't worked. Reference credible sources when appropriate: the 2025 American Academy of Pediatrics Clinical Report on PANS is a legitimate resource to bring to an appointment. Ask clinical questions rather than advocating for a specific diagnosis — "given the sudden onset and this symptom cluster, what else would you want to rule out?" invites engagement in a way that demands do not. And know that if a provider refuses to engage with the clinical picture at all, seeking a second opinion from a PANS/PANDAS-experienced provider is your right.