Sanfilippo syndrome.
D002648:Child; D006801:Humans; D006948:Hyperkinesis / Q000150:complications; D008607:Intellectual Disability / Q000150:complications; D008297:Male; D009083:Mucopolysaccharidoses / Q000150:complications*; D001405:Reflex, Babinski; D012852:Sinusitis / Q000150:complications; D013577:Syndrome