Symptom Information: Sort according to HPO 

1
(HPO:0002927) Histidinuria very frequent [IBIS] 8669938 IBIS 3 / 7739
2
(HPO:0010906) Hyperhistidinemia very frequent [IBIS] 8669938 IBIS 1 / 7739
3
(HPO:0010904) Abnormality of histidine metabolism very frequent [IBIS] 8669938 IBIS 1 / 7739
4
(HPO:0000708) Behavioral abnormality 212 / 7739
5
(HPO:0001249) Intellectual disability 1089 / 7739
6
(HPO:0001263) Global developmental delay 853 / 7739
7
(HPO:0001270) Motor delay 322 / 7739
8
(HPO:0002167) Neurological speech impairment 308 / 7739
9
(OMIM) Decreased histidase activity 1 / 7739
10
(OMIM) Decreased urocanic acid in stratum corneum 1 / 7739
11
(OMIM) Increased histidine in blood, urine, and CSF 1 / 7739
12
(OMIM) Decreased or absent histidase activity 1 / 7739
13
(OMIM) Decreased urocanic acid in blood, urine, and skin cells 1 / 7739