Symptom Information: Sort according to HPO 

1
(HPO:0000496) Abnormality of eye movement 79 / 7739
2
(HPO:0000718) Aggressive behavior rare [HPO:skoehler] 109 / 7739
3
(HPO:0000726) Dementia 131 / 7739
4
(HPO:0000743) Frontal release signs 6 / 7739
5
(HPO:0001249) Intellectual disability 1089 / 7739
6
(HPO:0001263) Global developmental delay 853 / 7739
7
(HPO:0001250) Seizures rare [HPO:skoehler] 1245 / 7739
8
(HPO:0001272) Cerebellar atrophy 197 / 7739
9
(HPO:0001300) Parkinsonism 75 / 7739
10
(HPO:0001332) Dystonia 197 / 7739
11
(HPO:0001337) Tremor 200 / 7739
12
(HPO:0002059) Cerebral atrophy 171 / 7739
13
(HPO:0002063) Rigidity 92 / 7739
14
(HPO:0002067) Bradykinesia 62 / 7739
15
(HPO:0002313) Spastic paraparesis 33 / 7739
16
(HPO:0002459) Dysautonomia 34 / 7739
17
(HPO:0002465) Poor speech 31 / 7739
18
(OMIM) Retinal nerve atrophy (in some patients) 1 / 7739
19
(OMIM) Lack of speech 17 / 7739
20
(HPO:0002071) Abnormality of extrapyramidal motor function 76 / 7739
21
(HPO:0002360) Sleep disturbance 113 / 7739
22
(HPO:0001327) Photomyoclonic seizures 125 / 7739
23
(OMIM) Iron deposition in the globus pallidus and substantia nigra seen on MRI 1 / 7739
24
(OMIM) T1-weighted hyperintensity surrounding a central band of hypointensity in the substantia nigra 1 / 7739
25
(HPO:0001344) Absent speech 57 / 7739
26
(HPO:0001423) X-linked dominant inheritance 69 / 7739
27
(HPO:0002180) Neurodegeneration 31 / 7739