Understanding PANS & PANDAS: Why Some Children Suddenly Change, and How We Can Help Them Recover

For many families, PANS and PANDAS can feel terrifying and deeply confusing.

One day your child may seem relatively well, and then suddenly they’re anxious, angry and aggressive, obsessive, unable to sleep, refusing food, struggling at school or developing tics. It might feel like they’ve become a completely different child almost overnight.

Many parents tell us that, “It felt like we lost our child.”

And one of the hardest parts is that many families are initially told it is behavioural or purely due to a condition like autism or ADHD. You might even have been told it’s due to your parenting, or ‘simply a phase’. 

But for some children, there is a very real inflammatory and neurological process occurring inside the brain and nervous system. In this blog we focus on PANS and PANDAS, disorders that can affect your child’s learning and development. 

What Are PANS & PANDAS?

PANDAS stands for: Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections.

PANDAS occurs when a child develops an abnormal immune response following a strep infection.

Instead of the immune system simply fighting the infection, the immune response mistakenly begins attacking parts of the child’s own brain, particularly areas involved in:

• emotion

• movement

• behaviour 

• compulsions

• regulation

Meanwhile, PANS stands for: Pediatric Acute-onset Neuropsychiatric Syndrome. PANS is broader and the trigger may not be strep alone.

Possible triggers include viruses, exposure to mould, Lyme disease, gut infections and mycoplasma. It can also be due to inflammation, toxins, immune dysregulation or significant physiological stress. 

Both conditions can create intense neuroinflammation inside the nervous system.

What Symptoms Can Children Develop?

One of the hallmarks of PANS/PANDAS is a sudden change.

Parents often describe:

“overnight changes,” 

“a different child,” 

or dramatic regressions. 

Symptoms can include emotional behaviour like rage or aggression, extreme anxiety and panic attacks, irritability, mood swings and sudden fears or phobias. They might also suffer from severe separation anxiety 

Many children become emotionally explosive because the nervous system is stuck in a chronic threat response.

OCD & Repetitive Behaviours

Many children suddenly develop:

• obsessive thoughts

• compulsions

• repetitive questions

• intrusive fears

• ritualistic behaviours

• rigid thinking

• an extreme need for control

Parents are often shocked by how suddenly these behaviours appear.

Tics & Movement Changes

Children may develop blinking, facial grimacing, vocal tics and throat clearing. Other common signs include body jerks, changes to their handwriting, clumsiness or difficulties with coordination. 

This happens because inflammation affects areas of the brain involved in motor control and regulation.

Speech & Regression

Some children:

• stop speaking 

• regress developmentally

• lose previously acquired skills

• baby-talk

• struggle to retrieve words

• become socially withdrawn. 

This can be deeply distressing for families.

Sensory Difficulties

Children may suddenly become hypersensitive to sound, distressed by clothing, fearful of lights, overwhelmed in busy places, avoidant of touch or highly sensory-seeking. Many children appear stuck in a survival-based sensory state.

Sleep Problems

Sleep disruption is extremely common. When the nervous system is inflamed, the brain struggles to fully switch into restorative regulation.

Food Restriction & Eating Changes

Some children suddenly refuse foods, become fearful of eating or only like certain textures. Others crave carbohydrates, sugar, dairy or processed foods. 

This can be linked to:

• inflammation

• dopamine dysregulation

• gut dysfunction

• and sensory changes

Urinary Symptoms & Bedwetting

Many children suddenly:

• wet the bed

• urinate frequently

• regress when it comes to toileting

• urgently need the toilet often

This is often a sign the autonomic nervous system and brainstem are under significant stress.

Why Does This Happen To The Brain?

The immune system and nervous system are deeply connected. When inflammation becomes excessive, the nervous system can shift into survival mode.

This affects a child’s emotional regulation, sensory processing, movements, sleep, cognition, behaviour and ability to engage socially

Many children with PANS/PANDAS appear neurologically “stuck” in lower brain survival networks. This means the brain prioritises protection, hypervigilance and threat detection instead of learning, reasoning, flexibility, communication and emotional regulation. 

Primitive Reflexes & Nervous System Regression

Many children with PANS/PANDAS show:

• retained primitive reflexes

• vestibular dysfunction

• sensory dysregulation 

• brainstem immaturity

During inflammatory flares, these reflexes often become stronger again.

As parents, you may notice:

• more emotional reactivity

• more oral behaviours

• more movement difficulties

• more sensory overwhelm

• increased aggression

• or developmental regression

This is because inflammation disrupts higher brain regulation. The nervous system falls back into older survival patterns.

Why Do These Children Often Become Angry Or Aggressive?

When the nervous system is overwhelmed and inflamed, children can lose access to higher cortical control.

This can lead to hitting, biting, screaming, throwing or explosive rage. These behaviours are not simply “bad behaviour.” Very often they reflect a brain and nervous system under threat.

The Gut-Brain-Immune Connection

Many children with PANS/PANDAS also have:

• gut dysfunction, 

• constipation, 

• diarrhoea, 

• bloating, 

• food sensitivities, 

• yeast overgrowth, 

• inflammation, 

• or poor digestion. 

The gut and immune system are closely connected.

Chronic gut inflammation can:

• worsen neuroinflammation, 

• affect neurotransmitters, 

• increase sensory dysregulation, 

• and impair emotional regulation. 

This is why nutrition and gut support are often important pieces of recovery.

Can Children Recover?

Yes, many children improve significantly, especially if they have the right learning therapy. But recovery is often not simply about stopping behaviours. It usually requires supporting:

• the immune system

• nervous system regulation

• inflammation

• sensory processing 

• movement systems 

• sleep

• gut health 

• emotional safety

Healing is often layered.

What Can Help?

1. Reducing Inflammation

This may involve:

• identifying infections, 

• supporting the immune system, 

• addressing mould exposure, 

• reducing inflammatory foods, 

• supporting detoxification, 

• improving gut health, 

• and working with experienced practitioners. 

For many children:

• gluten, 

• dairy, 

• processed foods, 

• sugar, 

• artificial additives, 

• and inflammatory triggerscan worsen symptoms. 

2. Nervous System Regulation

These children often need significant support for their nervous system. Helpful tools can include:

• deep pressure

• proprioceptive activities

• Crawling, swinging or rhythmic movements

• spending time in a trampoline

• breathing work

• vagus nerve stimulation

• sensory regulation 

The nervous system heals best when it feels safe.

3. Primitive Reflex Integration

During inflammatory stress, primitive reflexes often remain active.

Supporting:

• Moro 

• Rooting 

• ATNR 

• STNR

• TLR

• Palmar integration 

can help improve:

• regulation

• sensory processing

• posture

• emotional control

• nervous system organisation. 

4. Sleep Support

Sleep is one of the most important healing tools for the brain. Children cannot regulate inflammation effectively without restorative sleep. 

In order for kids to sleep soundly, they need a calm nervous system. To encourage this, it helps to ensure their blood sugar is stable and they have a stable bedtime. 

5. Vagus Nerve & Brainstem Regulation

Many children with PANS/PANDAS remain stuck in fight-or-flight physiology.

Supporting the vagus nerve may help:

• emotional regulation

• digestion

• sleep

• social engagement

Activities may include humming, gargling, breathing work, singing, rhythmic movements and calming sensory input. 

6. Emotional Safety & Co-Regulation

Children with PANS/PANDAS often feel frightened inside their own bodies. Many become ashamed, confused, overwhelmed or emotionally exhausted. 

What they need is a sense of safety, calm adults, predictable boundaries and connection. This does not mean permissiveness: it means helping the nervous system stabilise.

Recovery Is Often Not a Linear Process

Many parents feel discouraged because symptoms can fluctuate; there will be days when they regress, and others when they improve. This is very common: progress usually happens in waves. 

During healing, children may temporarily regress and become more emotional.  This does not always mean things are getting worse.The nervous system is often trying to reorganise itself.

The Most Important Message For Parents

If your child has PANS or PANDAS, you are not imagining it. But it’s vital to remember these children are not “just naughty”. Nor are they being manipulative or acting spoiled. Many are experiencing profound neurological and inflammatory stress.

And while the journey can feel overwhelming, many children can improve dramatically with the right support, understanding, regulation, and physiological care.

Because underneath the behaviours is often a frightened, inflamed, overwhelmed nervous system trying desperately to feel safe again.