In some children with autism there may be a sudden onset of Obsessive-Compulsive Disorder or an eating disorders. The scientific name for this is pediatric acute-onset neuropsychiatric syndrome and is usually shortened to PANS. There is a subtype of this called PANDAS, but this is where the cause has been identified as an exposure to a strep infection. While PANS/PANDAS is most frequently found in children without autism, it also can affect these children. The problem is heightened as it can be especially challenging to diagnose in a child with Autism because many of the symptoms overlap.
To illustrate the extent of Pans/Panda Between 1 and 3% of youths have OCD. Among these with OCD, up to 5% may meet the criteria for PANS/PANDAS. Strangely whilst OCD is commonly associated with Autism (around 17%) there is no link between this and PANS/PANDAS as there is with the generic child population.
What defines PANS/PANDAS is a sudden occurrence of OCD or Anorexia, howeverIt must be combined With the onset of at least two of seven signs:
- Anxiety
- Behavioral developmental regression
- Emotional liability or depression
- Irritability aggression or severally oppositional behavior
- Deterioration in school performance
- Sensory or motor abnormalities
- Somatic signs/symptoms, especially insomnia and urinary symptoms
PANDAS is more easily diagnosed as it is form of autoimmune encephalitis (inflammation of the brain), characterized by neuroinflammation. It is diagnosed only when these symptoms occur which cannot be contributed to other neurologic or medical disorders such as Tourette Syndrome, Lupus, Steroid responsive encephalitis, Multiple sclerosis, Guillain Barre syndrome, A different form of Autoimmune encephalitis and Other disorders.
Diagnosis can begin to occur between the ages of 3 and 12, however it is usually later and on average age of onset is between 7 and 8 years old. It is a condition that affects all socio-demographic groups equally. However there is a link with families who have a history of OCD or rheumatic fever.
Children with PANS/PANDAS nearly always suffer from cormorbidities (multiple concurrent symptoms. These include:
- Sleep disorders (80%)
- Behavioral regression (98%)
- Inability to concentrate (90%)
- Handwriting deterioration (90%)
- Urinary frequency, urgency, enuresis (90%)
- Hallucinations (10%)
- Eating disorders (20%)
- Other comorbidities include short-term memory loss, hyperactivity, aggressiveness
Before diagnosing PANDAS, a doctor will most likely order laboratory testing, EEG and MRI scans, or a sleep study. It is common to require a detailed family history (paying special attention to genetic factors and exposure to strep), perform a physical examination, asses involuntary movement and pupil dilation. They may also take a throat culture to identify the presence of a strep infection. It is important to note PANDAS will only be diagnosed if the symptoms cannot be explained by another disorder. Everything else should be ruled out first. For this reason a diagnosis can be slow.
There is usually a three prong treatment for PANS/PANDAS:
1. Treat and prevent infection: If the affected child has a bacterial infection, treating this infection can reduce symptoms which in turn improve outcomes, this is especially effective especially the first weeks or months of illness. Often, they may be prescribed 3 to 4 weeks of narrow-spectrum antibiotics.
2. Address immune system dysfunction: Immunomodulatory therapies to address immune system dysfunction. These can include NSAID’s Oral or IV steroids, intravenous immunoglobulin (IVIG), therapeutic plasmapheresis (replacement of blood plasma), and others indicated by severity. These are only useful in conjunction with infection treatment and psychiatric and behavioral interventions.
3. Applying Behavioral and Psychiatric Interventions: Behavioral and psychiatric Interventions may include SSRI’s Anxiolytics, Soporifics, other typical psychiatric medications, and cognitive behavior therapy.
Parents can receive supportive therapy to help understand of illness and treatment. Getting parents into CBT even before the child is ready can be very helpful. If you suspect your child may have PANS or PANDAS, consult your doctor.
In very rare cases, a child with autism may also qualify for a diagnosis of PANS/PANDAS.

https://www.liebertpub.com/doi/full/10.1089/cap.2014.0084







