Start here

If your child has had a sudden, dramatic change in behavior, mood, thinking, eating, sleep, school functioning, or daily skills, trust what you are seeing. PANS can be confusing, overwhelming, and difficult to explain to others—especially in the early stages.

This guide is designed to help families take practical next steps, organize information, and advocate for appropriate medical evaluation.

This page is for education and organization only. It is not medical advice and is not a substitute for care from a qualified clinician.

What PANS can look like

PANS stands for Pediatric Acute-onset Neuropsychiatric Syndrome. It often involves a sudden or severe worsening of symptoms such as:

  • OCD behaviors or intrusive fears

  • Restrictive eating or sudden food refusal

  • Anxiety, panic, or separation anxiety

  • Tics or unusual movements

  • Aggression, irritability, or emotional lability

  • Regression in speech, learning, toileting, or independence

  • Cognitive changes, brain fog, slowed processing, or confusion

  • Sleep problems

  • Frequent urination or new accidents

  • Sensory sensitivity

  • School refusal or sudden loss of function

The key clue is often abrupt change or a clear worsening after illness, infection, inflammation, or another immune stressor.

Step 1: Write down exactly what changed

Before appointments, make a short timeline.

Include:

  • The date or week symptoms began

  • Whether onset was sudden, overnight, or more gradual

  • Which symptoms appeared first

  • What skills or behaviors changed

  • Whether symptoms wax and wane

  • Any recent illnesses, fevers, sore throat, ear infection, sinus issues, stomach bug, COVID, flu, tick bites, dental issues, vaccinations, mold exposure, or major stress

Helpful prompt

“My child had a sudden change from baseline on or around [date]. Before that, they were able to [baseline skills]. After that, we noticed [specific symptoms].”

Step 2: Track symptoms in a simple way

You do not need a perfect spreadsheet. You need a usable record. Choose your child’s five or so most significant symptoms.

Track:

  • OCD or rigid behaviors

  • Food restriction or eating changes

  • Anxiety or panic

  • Tics or movements

  • Aggression or irritability

  • Sleep

  • Urination changes

  • School functioning

  • Speech/language changes

  • Motor skills or handwriting

  • Sensory issues

  • Energy level and fatigue

  • Pain complaints, headaches, stomach pain, joint pain, foot or leg pain

Simple symptom log

Use a 0–5 scale each day:

  • 0 = none

  • 1 = minimal

  • 2 = mild

  • 3 = moderate

  • 4 = severe

  • 5 = extreme

Also note:

  • illnesses or exposures

  • medications started or stopped

  • antibiotics and response

  • anti-inflammatory meds and response

  • sleep changes

  • menstrual cycle if relevant

Step 3: Gather the medical history that matters most

Bring together anything that may help show a pattern.

Important records to collect

  • Pediatrician notes

  • Urgent care or ER visits

  • Strep tests and throat cultures

  • Culture results

  • Prior antibiotic prescriptions and dates

  • Lab results

  • Neurology, psychiatry, immunology, rheumatology, or infectious disease notes

  • School evaluations or IEP/504 records

  • Therapy notes if relevant

  • Discharge summaries from hospitalizations

Important history to write down

  • Past strep infections

  • Recurrent sore throats, sinus infections, ear infections, or fevers

  • Exposure to strep in siblings or classmates

  • COVID, flu, mycoplasma, mono, Lyme/tick exposure, or other infections

  • History of sudden regressions or flares

  • Whether symptoms improved during antibiotics

  • Autoimmune disease in family members

  • Immune issues, allergies, eczema, asthma, or unusual infections

Step 4: Prepare what to say at the pediatrician

Many parents are dismissed because they describe the situation too broadly. Be brief, specific, and focused on the abrupt change.

What to say

“I am concerned about a sudden neuropsychiatric and functional change in my child after illness or infection. This is a clear change from baseline. I would like evaluation for possible PANS or infection-triggered neuroinflammation, including ruling out strep and other possible triggers.”

Also say

  • “This is not just a longstanding behavioral issue. This was a marked change.”

  • “I am looking for help identifying a medical trigger and documenting the timeline.”

  • “I would like copies of all labs and test results.”

  • “If you are not comfortable managing this, I would like referrals to specialists who can help.”

Bring to the visit

  • One-page timeline

  • Symptom list

  • Past infection history

  • Medication response history

  • A short list of your top questions

Step 5: Ask about common lab work and infectious workup

Testing varies by child and by physician. Some children have obvious triggers; others need broader workup.

Common things families discuss with clinicians

  • Rapid strep test and/or throat culture

  • CBC with differential

  • CMP or basic metabolic labs

  • ESR and CRP

  • ASO and anti-DNase B titers

  • Mycoplasma testing if clinically relevant

  • EBV/mono history if relevant

  • Urinalysis if there is urinary frequency or accidents

  • Ferritin, iron studies, vitamin D, B12, folate, thyroid testing if symptoms suggest broader contributors

  • Immune workup if recurrent infections or immune concerns are present

  • Tick-borne evaluation if exposure history and symptom pattern support it

Test selection should be guided by the child’s history, symptoms, and clinician judgment.

Step 6: Start troubleshooting possible triggers

PANS can be associated with multiple immune triggers. Not every child has the same one.

Common triggers families and clinicians consider

  • Strep

  • Mycoplasma

  • Viral illness

  • COVID or post-viral flares

  • Sinus or dental infection

  • Tick-borne illness where exposure and symptoms support it

  • Mold or significant environmental inflammation triggers

  • Immune dysregulation without one clearly identified trigger

Questions to ask yourself

  • Did symptoms begin after a sore throat, fever, or infection?

  • Has my child had repeated strep or close exposure to strep?

  • Did my child improve on antibiotics?

  • Are there symptoms that suggest another trigger, such as chronic fatigue, pain, headaches, rashes, or recurrent sinus issues?

  • Does the child flare with each new illness?

Step 7: Keep a medication response history

This can be one of the most useful clues.

Track:

  • Antibiotics used

  • Dose and length

  • Whether symptoms improved, worsened, or stayed the same

  • How quickly any response happened

  • Whether the gains lasted after treatment ended

  • Any side effects

Also track response to supportive measures such as:

  • Ibuprofen or other anti-inflammatory use recommended by a clinician

  • Antihistamines

  • Sleep support

  • Probiotics

  • Steroids, if prescribed

  • IVIG, if prescribed

A child who repeatedly improves during antibiotics may be giving important diagnostic clues.

Step 8: Ask for referrals early

Some pediatricians will help. Some will not. That does not mean you should stop.

Depending on the child’s presentation, families may ask for referral to:

  • Pediatric infectious disease

  • Pediatric immunology

  • Pediatric neurology

  • Developmental pediatrics

  • Child psychiatry

  • Pediatric rheumatology

  • ENT if recurrent throat/sinus issues are suspected

  • GI if eating, constipation, or medication tolerance issues are major

What to say

“If you are unable to evaluate or treat this directly, please refer us to specialists who can assess immune, infectious, inflammatory, or neurologic contributors.”

Step 9: Find knowledgeable clinicians and parent support

Many families have to build their own care team.

Try:

  • Asking local parent groups which clinicians are at least willing to evaluate

  • Looking for clinicians familiar with PANS/PANDAS, infection-triggered neuropsychiatric symptoms, or pediatric neuroimmunology

  • Calling offices and asking whether the provider evaluates sudden-onset OCD, tics, regression, or suspected PANS/PANDAS

  • Asking your pediatrician for written referrals even if they are skeptical

Questions to ask an office before booking

  • Does this provider evaluate suspected PANS/PANDAS?

  • Do they review outside lab work and medical timelines?

  • Will they consider infectious or immune triggers?

  • Are they comfortable coordinating with pediatricians or specialists?

Step 10: Use supportive care while seeking answers

Families often need practical support while waiting for appointments.

Discuss with your child’s clinician whether short-term supportive measures make sense, such as:

  • pain or anti-inflammatory support when appropriate

  • sleep support

  • constipation management

  • hydration and nutrition support

  • occupational therapy for sensory/motor issues

  • speech therapy if language regressed

  • school accommodations

  • counseling support for parent coping and child distress

Common home priorities

  • reduce demands during flares

  • keep routines simple

  • protect sleep

  • document changes

  • treat illness exposures promptly with medical guidance

Do not blame yourself if the child cannot “push through.” Loss of function is often part of the illness picture.

Step 11: Get school documentation in place

If school is affected, document it early.

Ask for:

  • attendance flexibility

  • reduced workload during flares

  • bathroom access

  • sensory accommodations

  • testing flexibility

  • homebound or temporary modifications if needed

Helpful wording:

“My child is undergoing medical evaluation for sudden-onset neuropsychiatric and functional changes that affect learning, attendance, stamina, and regulation.”

Step 12: Know when symptoms need urgent help

Seek urgent medical attention if your child has:

  • dehydration or inability to eat/drink

  • suicidality or self-harm risk

  • severe aggression creating immediate danger

  • catatonia, extreme confusion, or inability to function safely

  • concerning neurologic symptoms such as seizure, new focal weakness, or altered awareness

A practical checklist for parents

Start now

  • Write a 1-page timeline

  • Start a symptom tracker

  • Gather old records and lab results

  • List all infections, antibiotics, and responses

  • Book pediatrician visit

  • Ask for copies of every result

  • Request referrals early

  • Join a trusted support community

Bring to appointments

  • Symptom timeline

  • Baseline vs current functioning notes

  • Infection history

  • Medication response history

  • Specific questions

  • Videos or photos if they help document changes

What to remember

  • Parents are often the first to recognize the pattern

  • Sudden change from baseline matters

  • Even when a provider is unfamiliar with PANS, they can still help rule out triggers, run labs, document symptoms, and make referrals

  • Improvement may happen in steps, not all at once

  • You do not need to have every answer before asking for help

This resource is for educational purposes only and does not diagnose, treat, or replace medical care. Families should work with qualified medical professionals for individual evaluation, testing, and treatment decisions.