Post-streptococcal neuropsychiatric disorders encompass a broad spectrum of movement disorders, including tics, stereotypies, dystonia and tremor. We report the case of a 15-year-old boy who presented with a relapsing–remitting combination of psychogenic and organic movement disorders. Both relapses occurred after an episode of streptococcal pharyngitis and consisted in motor and phonic tics, an atypical gait disorder, and severe worsening of a pre-existing psychogenic tremor of the right hand. After each relapse, both psychogenic and ‘organic’ symptoms concomitantly remitted after the administration of an association of oral steroids and antibiotics. The peculiarity of this case consists in the coexistence of psychogenic and organic symptoms subsequent to streptococcal infection, and broadens the clinical spectrum of post-streptococcal neuropsychiatric disorders.
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