Etiological Analysis of Neurodevelopmental Disabilities: Single-Center Eight-Year Clinical Experience in South China

Table 1

Main clinical manifestations besides NDDs and the positive laboratory and imaging findings in syndromic NDDs.

No.	Positive findings	Cases
01	Failure to thrive	81
02	Seizure/convulsion	37
03	Hearing disability	28
04	Dysmorphic facial features	25
05	Abnormal urine odor	20
06	Eye movement obstacles	19
07	Vomitting	18
08	Hair depigmentation	15
09	Microcephaly	11
10	Skin abnormalities	10
11	Hepato/splenomegaly	10
12	Impaired swallowing and chewing	5
13	Fondus ocili abnormalities	4
14	Vision problem	4
15	Abnormal lens	3
16	Genitalia malformation	3
17	Metabolic acidosis	46
18	Hyperammonemia	12
19	Abnormal EEG	22
20	Skeleton abnormality on X ray	5
21	CT/MRI abnormal findings	85