It's an interesting hypothesis, OP.
panspandasuk.org/what-are-pans-and-pandas/
PANS
Paediatric Acute-onset Neuropsychiatric Syndrome
PANDAS
Paediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infections
People with PANS and PANDAS may experience a variety of different physical and mental health symptoms.
Such as:
OCD
Eating restrictions or severely restricted food intake
Anxiety (heightened anxiety, separation anxiety, irrational fears, panic episodes)
Tics
Emotional lability and/or depression
Irritability, aggression, and/or severely oppositional behaviours
Behavioural (developmental) regression (increase in temper tantrums, loss of age-appropriate language, clingy behaviour not related to anxiety)
Sudden deterioration in school performance (due to difficulties with memory, concentration, hyperactivity, impulsivity, new deficits of visuospatial skills)
Motor or sensory abnormalities (dysgraphia, clumsiness, tics, new sensory sensitivities to light, noise, smell, taste or texture)
Insomnia and/or sleep disturbances
Enuresis and/or urinary frequency
*Sometimes hallucinations and/or psychosis might be part of the symptoms experienced, however they are not officially part of the diagnostic criteria.
Remember that children with PANS or PANDAS may present with a different combination of symptoms, and that these symptoms may change over time. You do not need all the symptoms in the list to be diagnosed with PANS or PANDAS.