Symptom Information: Sort according to HPO 

1
(HPO:0001249) Intellectual disability 1089 / 7739
2
(HPO:0001250) Seizures 1245 / 7739
3
(HPO:0006932) Transient psychotic episodes 1 / 7739
4
(OMIM) Parkinsonian features 1 / 7739
5
(HPO:0000707) Abnormality of the nervous system 61 / 7739
6
(OMIM) Head nodding 5 / 7739