Beginning with a comment on “PDA” as sometimes used to mean “Public Display of Affection,” Gillberg says that in his own 40 years of clinical experience, PDA/EDA is not at all uncommon in language disorder, ADHD, selective mutism, school refusal, anorexia nervosa, certain behavioural phenotype syndromes (including 22q11 deletion syndrome and Marfan syndrome), epilepsy, and even the Japanese diagnosis of Hikikomori (complete social withdrawal).
QUOTE: “PDA is already a very real clinical problem, not just in the United Kingdom, but across the planet. Intervention and treatment currently rest almost exclusively on guesswork, clinical experience and trial and error. It is one of the most ‘difficult-to-treat’ constellations of problems in the whole of child and adolescent psychiatry.”
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