{"Name":"Deficiency of aromatic-L-amino-acid decarboxylase","DiseaseID__c":"GARD:0000770","id":770,"encodedName":"deficiency-of-aromatic-l-amino-acid-decarboxylase","IsDeleted":false,"Disease_Name_Full__c":"Deficiency of aromatic-L-amino-acid decarboxylase","Xref_IDs__c":"124600004; 237922009; C1291564; C142085; C537437; DOID:0090123; E70.81; MEDGEN:220945; MONDO:0012084; NBK595821; OMIM:608643; ORPHA:35708","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":3,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":1,"No_of_HHS_records__c":1,"World_Estimate__c":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":3,"No_of_Disease_Descriptions__c":5,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0012084","Disease_Description__c":"A rare, severe, genetic neurometabolic disorder associated with clinical manifestations related to impaired synthesis of dopamine, noradrenaline, adrenaline and serotonin. Clinical manifestations are typically characterized by early-onset muscular hypotonia, movement disorders (oculogyric crisis, dystonia), developmental delay, ptosis and non-motor symptoms (sleep disturbance, irritability, excessive sweating, and nasal congestion).","GARD_Name__c":"Deficiency of aromatic-L-amino-acid decarboxylase","GARD_Synonym__c":"aadc deficiency; aromatic amino acid decarboxylase deficiency; aromatic l-amino acid decarboxylase deficiency; aromatic l-amino-acid decarboxylase deficiency; ddc deficiency; deficiency of dopa decarboxylase; deficiency of hydroxytryptophan decarboxylase; deficiency of tryptophan decarboxylase; dopa decarboxylase deficiency","Curated_Disease_Description_Source__c":"GARD:0000770","Curated_Disease_Description__c":"Aromatic l-amino acid decarboxylase (AADC) deficiency is an inherited disorder that affects the way nerve cells (neurons) transmit information to other cells. Signs and symptoms of AADC deficiency typically appear in the first six months of life. Affected infants may have feeding problems, weak muscle tone (hypotonia), and sleep disturbances. Most children with AADC deficiency experience episodes called oculogyric crises that involve  involuntary upward-rolling movements of the eyes. Additional signs and symptoms typically include developmental delays and intellectual disabilities.  Movement disorders are common in people with AADC deficiency. Involuntary movements that can occur in people with AADC deficiency include muscle contractions that may cause unusual body positions (dystonia) and writhing movements of the limbs (athetosis). Dystonia tends to become worse when the individual is tired, but it usually improves after sleep. Affected individuals may also experience slow or diminished movements (hypokinesia).  AADC deficiency may also affect the autonomic nervous system, which controls involuntary body processes such as the regulation of blood pressure and body temperature. This can lead to signs and symptoms such as droopy eyelids (ptosis), constriction of the pupils of the eyes (miosis), inappropriate or impaired sweating, nasal congestion, drooling, poor control of body temperature, low blood pressure (hypotension), low blood glucose (hypoglycemia), and abnormal heart rhythms. People with AADC deficiency have an increased risk of infection, which can lead to life-threatening complications.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:35708","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0012084","ORPHANET_ID__c":"ORPHA:35708","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Deficiencia de l-aminoácido aromático decarboxilasa","Spanish_Description_Source__c":"ORPHA:35708","Spanish_Description__c":"Es un trastorno genético neurometabólico grave y poco frecuente asociado a manifestaciones clínicas relacionadas con una alteración en la síntesis de dopamina, noradrenalina, adrenalina y serotonina. Las manifestaciones clínicas se caracterizan típicamente por hipotonía muscular de inicio precoz, trastornos del movimiento (crisis oculógiras, distonía), retraso del desarrollo, ptosis y síntomas no motores (trastornos del sueño, irritabilidad, sudoración excesiva y congestión nasal).","Spanish_Disease_Name__c":"deficiencia de l-aminoácido aromático decarboxilasa","Spanish_GARD_Synonym__c":"deficiencia de aadc","Category_Linearization__c":"ORPHA:68367","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"Aromatic l-amino acid decarboxylase (AADC) deficiency is an inherited disorder that affects the way nerve cells (neurons) transmit information to other cells. Signs and symptoms of AADC deficiency typically appear in the first six months of life. Affected infants may have feeding problems, weak muscle tone (hypotonia), and sleep disturbances. Most children with AADC deficiency experience episodes called oculogyric crises that involve  involuntary upward-rolling movements of the eyes. Additional signs and symptoms typically include developmental delays and intellectual disabilities.  Movement disorders are common in people with AADC deficiency. Involuntary movements that can occur in people with AADC deficiency include muscle contractions that may cause unusual body positions (dystonia) and writhing movements of the limbs (athetosis). Dystonia tends to become worse when the individual is tired, but it usually improves after sleep. Affected individuals may also experience slow or diminished movements (hypokinesia).  AADC deficiency may also affect the autonomic nervous system, which controls involuntary body processes such as the regulation of blood pressure and body temperature. This can lead to signs and symptoms such as droopy eyelids (ptosis), constriction of the pupils of the eyes (miosis), inappropriate or impaired sweating, nasal congestion, drooling, poor control of body temperature, low blood pressure (hypotension), low blood glucose (hypoglycemia), and abnormal heart rhythms. People with AADC deficiency have an increased risk of infection, which can lead to life-threatening complications.","Curated_Disease_Description_Source__c":"GARD:0000770","GARD_Synonym__c":"aadc deficiency; aromatic amino acid decarboxylase deficiency; aromatic l-amino acid decarboxylase deficiency; aromatic l-amino-acid decarboxylase deficiency; ddc deficiency; deficiency of dopa decarboxylase; deficiency of hydroxytryptophan decarboxylase; deficiency of tryptophan decarboxylase; dopa decarboxylase deficiency","Name":"Deficiency of aromatic-L-amino-acid decarboxylase","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Metabolic Support UK","Website__c":"https://www.metabolicsupportuk.org"},{"Account_Name__c":"Pediatric Neurotransmitter Disease Association","Website__c":"https://www.pndassoc.org/"},{"Account_Name__c":"The AADC Research Trust","Website__c":"https://www.aadcresearch.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"Tag_Name__c":"Inborn Errors of Metabolism","Tag_Category__c":"Cause;Disease Category","category_description":"Inherited metabolic diseases, or inborn errors of metabolism, are a group of genetic diseases that affect the ability of the body's cells to convert food into energy.","curated_tag_name":"Inherited metabolic diseases"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:35708"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:35708"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1291564"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0000770","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK595821","Source__c":"Gene Review","Xref__c":"NBK595821"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C537437","Source__c":"MONDO:0012084","Xref__c":"C537437"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=237922009","Source__c":"MONDO:0012084","Xref__c":"237922009"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1291564","Source__c":"C1291564","Xref__c":"C1291564"},{"URL__c":"https://www.omim.org/entry/608643","Source__c":"C1291564; MONDO:0012084; ORPHA:35708","Xref__c":"OMIM:608643"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C142085","Source__c":"C1291564; MONDO:0012084","Xref__c":"C142085"},{"URL__c":"https://www.orpha.net/en/disease/detail/35708","Source__c":"C1291564; MONDO:0012084; ORPHA:35708","Xref__c":"ORPHA:35708"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=220945","Source__c":"C1291564","Xref__c":"MEDGEN:220945"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0090123","Source__c":"MONDO:0012084","Xref__c":"DOID:0090123"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0012084","Source__c":"GARD:0000770","Xref__c":"MONDO:0012084"},{"URL__c":"https://medlineplus.gov/genetics/condition/aromatic-l-amino-acid-decarboxylase-deficiency","Source__c":"GARD:0000770","Xref__c":"https://medlineplus.gov/genetics/condition/aromatic-l-amino-acid-decarboxylase-deficiency"},{"URL__c":"http://purl.bioontology.org/ontology/ICD10CM/E70.81","Source__c":"MONDO:0012084","Xref__c":"E70.81"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=124600004","Source__c":"C1291564","Xref__c":"124600004"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"DDC","GHR_URL__c":"https://medlineplus.gov/genetics/gene/ddc","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An emotional state characterized by negative feelings of heightened frustration, annoyance, or feeling upset, often triggered by internal factors (e.g., fatigue, hunger, unfulfilled desires) or external factors (e.g., social or environmental challenges). Irritability may be unpredictable, and is accompanied by a lowered threshold for emotional reactivity and observable features (speech, facial expressions, or psychomotor activity).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000737","HPO_Synonym__c":"Cranky; Easily annoyed; Easily bothered; Easily upset; Grumpy; Hot-temper; Irritability; Irritable; Irritable mood; On edge; Quick-temper; Short fuse; Short tempered","HPO_Name__c":"Irritability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A movement disorder which consists of effects including diminished voluntary movements and the presence of involuntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100660","HPO_Synonym__c":"Disorder of involuntary muscle movements; Dyskinesis","HPO_Name__c":"Dyskinesia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Atypical behavior is an abnormality in a person's actions that can be controlled or modulated by the will of the individual. While abnormal behaviors can be difficult to control, they are distinct from other abnormal actions that cannot be affected by the individual's will.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000708","HPO_Synonym__c":"Behavioral abnormality; Behavioral changes; Behavioral disorders; Behavioral disturbances; Behavioral problems; Behavioral symptoms; Behavioral/psychiatric abnormalities; Behavioural symptoms; Behavioural/Psychiatric abnormality; Psychiatric disorders; Psychiatric disturbances","HPO_Name__c":"Atypical behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Difficulty in swallowing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002015","HPO_Synonym__c":"Difficulty swallowing; Poor swallowing; Swallowing difficulties; Swallowing difficulty","HPO_Name__c":"Dysphagia","Feature_System__c":"Nervous System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Low Blood Pressure, vascular hypotension.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002615","HPO_Synonym__c":"Arterial hypotension; Low blood pressure","HPO_Name__c":"Hypotension","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Difficulty to maintain correct position of the head while standing or sitting. Infant head lag is observed when the head seems to flop around or lags posteriorly behind the trunk. Several articles have maintained that head lag should be absent by age 3 to 4 months.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002421","HPO_Synonym__c":"Delay in head control; Delay in head righting; Infant head lag; Poor head control","HPO_Name__c":"Poor head control","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A decreased concentration of glucose in the blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001943","HPO_Synonym__c":"Hypoglycaemia; Low blood sugar","HPO_Name__c":"Hypoglycemia","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An acute dystonic reaction with blepharospasm, periorbital twitches, and protracted fixed staring episodes. There may be a maximal upward deviation of the eyes in the sustained fashion. Oculogyric crisis can be triggered by a number of factors including neuroleptic medications.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010553","HPO_Name__c":"Oculogyric crisis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal pattern in the quality, quantity, or characteristics of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002360","HPO_Synonym__c":"Difficulty sleeping; Sleep abnormality; Sleep disturbances; Sleep dysfunction; Sleep-wake disturbance; Trouble sleeping","HPO_Name__c":"Sleep disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001332","HPO_Synonym__c":"Dystonic movements","HPO_Name__c":"Dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of Developmental delay characterized by a delay in acquiring motor skills.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001270","HPO_Synonym__c":"Delay in development of motor milestones; Delay in motor development; Delayed development of motor milestones; Delayed early motor milestones; Delayed motor development; Delayed motor milestones; Locomotor delay; Motor developmental delay; Motor developmental milestones not achieved; Motor retardation; Retarded motor development; Slow development of motor milestones","HPO_Name__c":"Motor delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced ability to pass air through the nasal cavity often leading to mouth breathing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001742","HPO_Synonym__c":"Blockage of nose; Nasal blockage; Nasal obstruction; Obstruction of nose; Stuffy nose","HPO_Name__c":"Nasal congestion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"A limitation in the passive range of motion of a joint resulting from loss of elasticity in the periarticular tissues owing to structural changes of non-bony tissues, such as muscles, tendons, ligaments, joint capsules or skin. A contracture prevents movement of the associated body part.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0034392","HPO_Synonym__c":"Contracture","HPO_Name__c":"Joint contracture","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal excessive perspiration (sweating) despite the lack of appropriate stimuli like hot and humid weather.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000975","HPO_Synonym__c":"Diaphoresis; Excessive sweating; Increased sweating; Profuse sweating; Sweating; Sweating profusely; Sweating, increased","HPO_Name__c":"Hyperhidrosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001508","HPO_Synonym__c":"Faltering weight; FTT; Postnatal failure to thrive; Weight faltering","HPO_Name__c":"Failure to thrive","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002020","HPO_Synonym__c":"Acid reflux; Acid reflux disease; Gastro-esophageal reflux; Gastroesophageal reflux disease; GERD; GORD; Heartburn","HPO_Name__c":"Gastroesophageal reflux","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal (non-physiological) constriction of the pupil.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000616","HPO_Synonym__c":"Constricted pupils; Pupillary constriction","HPO_Name__c":"Miosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002509","HPO_Synonym__c":"Appendicular hypertonia; Increased muscle tone of arm or leg","HPO_Name__c":"Limb hypertonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"Abnormally increased frequency (usually defined as three or more) loose or watery bowel movements a day.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002014","HPO_Synonym__c":"Diarrhea; Watery stool","HPO_Name__c":"Diarrhea","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001260","HPO_Synonym__c":"Difficulty articulating speech; Dysarthric speech","HPO_Name__c":"Dysarthria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Persistent deficits in social interaction and communication and interaction as well as a markedly restricted repertoire of activity and interest as well as repetitive patterns of behavior.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000729","HPO_Synonym__c":"ASD; Pervasive developmental disorder","HPO_Name__c":"Autistic behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001263","HPO_Synonym__c":"Delayed cognitive development; Delayed development; Delayed developmental milestones; Delayed intellectual development; Delayed milestones; Delayed psychomotor development; Developmental delay; Developmental delay in early childhood; Developmental delay, global; Developmental retardation; GDD; Lack of psychomotor development; Motor and developmental delay; Motormental retardation; Psychomotor delay; Psychomotor development deficiency; Psychomotor development failure; Psychomotor developmental delay; Retarded development; Retarded mental development; Retarded psychomotor development","HPO_Name__c":"Global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"5-HIAA (5-hydroxyindolacetic acid) concentration in the cerebrospinal fluid (CSF) is below the lower limit of normal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025455","HPO_Synonym__c":"Decreased CSF 5-HIAA; Low CSF 5-HIAA; Low CSF 5-hydroxyindolacetic acid","HPO_Name__c":"Decreased CSF 5-hydroxyindolacetic acid concentration","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A height below that which is expected according to age and sex norms. Although there is no universally accepted definition of short stature, many refer to \\\"short stature\\\" as height more than 2 standard deviations below the mean for age and sex (or below the 3rd percentile for age and sex dependent norms).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004322","HPO_Synonym__c":"Decreased body height; Height less than 3rd percentile; Short stature; Small stature; Stature below 3rd percentile","HPO_Name__c":"Short stature","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Diminution of tendon reflexes, which is an invariable sign of peripheral nerve disease.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001315","HPO_Synonym__c":"Absent or decreased deep tendon reflexes; Decreased deep tendon reflexes; Decreased tendon reflexes; Decreased to absent deep tendon reflexes; Decreased/absent deep tendon reflexes; Depressed tendon reflexes; Diminished deep tendon reflexes; Diminished or absent deep tendon reflexes; Diminished or absent tendon reflexes; Hypoactive to absent deep tendon reflexes; Impaired tendon reflexes; Reduced/absent deep tendon reflexes; Weak or absent deep tendon reflexes","HPO_Name__c":"Reduced tendon reflexes","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011968","HPO_Synonym__c":"Decreased oral intake; Feeding difficulties; Feeding problems; Poor feeding","HPO_Name__c":"Feeding difficulties","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormally diminished motor activity. In contrast to paralysis, hypokinesia is not characterized by a lack of motor strength, but rather by a poverty of movement. The typical habitual movements (e.g., folding the arms, crossing the legs) are reduced in frequency.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002375","HPO_Synonym__c":"Decreased muscle movement; Decreased spontaneous movement; Decreased spontaneous movements","HPO_Name__c":"Hypokinesia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003487","HPO_Synonym__c":"Extensor plantar reflexes; Extensor plantar response; Extensor plantar responses; Positive Babinski sign","HPO_Name__c":"Babinski sign","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000508","HPO_Synonym__c":"Blepharoptosis; Drooping upper eyelid; Eyelid ptosis; Palpebral ptosis","HPO_Name__c":"Ptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement about a joint axis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001337","HPO_Synonym__c":"Tremor; Tremors","HPO_Name__c":"Tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001249","HPO_Synonym__c":"Intellectual disability; Mental deficiency; Mental retardation; Mental retardation, nonspecific; Mental-retardation; Nonprogressive intellectual disability; Nonprogressive mental retardation","HPO_Name__c":"Intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Infrequent or difficult evacuation of feces.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002019","HPO_Synonym__c":"Constipation; Costiveness; Dyschezia","HPO_Name__c":"Constipation","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Habitual flow of saliva out of the mouth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002307","HPO_Synonym__c":"Dribbling; Drooling; Sialorrhea","HPO_Name__c":"Drooling","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of abnormally increased levels of prolactin in the blood. Prolactin is a peptide hormone produced by the anterior pituitary gland that plays a role in breast development and lactation during pregnancy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000870","HPO_Synonym__c":"Hyperprolactinaemia; Hyperprolactinemia; Prolactin excess","HPO_Name__c":"Increased circulating prolactin concentration","Feature_System__c":"Nervous System; Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Decreased concentration of homovanillic acid (HVA) in the cerebrospinal fluid. HVA is a metabolite of dopamine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003785","HPO_Name__c":"Decreased CSF homovanillic acid concentration","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:35708","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormality observed by electroencephalogram (EEG), which is used to record of the brain's spontaneous electrical activity from multiple electrodes placed on the scalp.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002353","HPO_Synonym__c":"Abnormal EEG; Abnormal electroencephalogram; EEG abnormalities; Electroencephalogram abnormal; Electroencephalogram abnormalities","HPO_Name__c":"EEG abnormality","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism"],"Disease Category":["Genetics","Neurology","Inborn Errors of Metabolism"],"Specialist":["Genetics","Neurology","Pediatrics"]},"synonyms":["aadc deficiency"," aromatic amino acid decarboxylase deficiency"," aromatic l-amino acid decarboxylase deficiency"," aromatic l-amino-acid decarboxylase deficiency"," ddc deficiency"," deficiency of dopa decarboxylase"," deficiency of hydroxytryptophan decarboxylase"," deficiency of tryptophan decarboxylase"," dopa decarboxylase deficiency"]}