A Male with Cooccurrence of Down Syndrome and Fragile X Syndrome

Table 1

Cooccurrence of Down syndrome and Fragile X syndrome cases.

Case	Age	Sex	Medical problems	Physical characteristics		Development	Adaptive behavior composite score	Maladaptive behaviors
				DS	FXS
Current case	8 y	M	PDA and VSD, Hirschsprung disease, hip dysplasia, myringotomy, adenoidectomy, tonsillectomy	+	−	Sitting at 7 months, does not ambulate independently, nonverbal	46	None
Stevens et al. (2010) [6]	14 y	M	ASD and mild aortic valve insufficiency, pressure equalization tubes, severe erosive esophagitis	+	+	Sitting at 18 months, ambulates independently, intermittent use of single words	38	Autism, tantrums, physical aggression
Collacott et al. (1990) [7]	21 y	F	None	+	+	Partially mobile, indistinct phrases	20	Stereotypic movements, hyperactivity, self-injurious behavior, physical aggression
Arinami et al. (1987) [8]	5 m	F	None	+	+	Unknown	Unknown	Unknown

PDA: patent ductus arteriosus.
VSD: ventricular septal defect.
ASD: atrial septal defect.