A case study is when a single person, group, or event is investigated and observations are summarized. 
A case of PANDAS with Kleine-Levin type periodic hypersomnia (2012)
PANDAS: An indication for tonsillectomy (abstract only)
PANDAS in Identical Siblings (abstract only)
Stuttering onset associated with streptococcal infection: A case suggesting stuttering as PANDAS
Strep and Urinary Frequency…Is There a Connection?
A 7-year-Old Boy with ADHD later experience sudden onset of PANDAS symptoms and diagnosed with PANDAS
“There is considerable research associating PANDAS with the symptoms of childhood-onset OCD, tic disorder, and ADHD. However, there are limited studies showing an association between the symptoms of PDD (particularly the subtypes of autism and Asperger’s syndrome) and PANDAS. 6 The objective of this case report is to highlight the above-mentioned association so that the level of awareness is increased and appropriate measures are taken early during the course of symptoms. “
A Case of Myoclonic Symptoms After Streptococcal Infection: Possible PANDAS Variant