What are the symptoms of 3-Hydroxyisobutyric aciduria ?
What are the signs and symptoms of 3-Hydroxyisobutyric aciduria? The signs and symptoms of 3-hydroxyisobutyric aciduria vary but may include: Developmental delay Intellectual disability Failure to thrive Characteristic facial features including a long philtrum and small, low-set ears Unusually small head (microcephaly) Congenital brain abnormalities Nausea Diarrhea Dehydration Lethargy The severity of the condition can also vary significantly from person to person. Some affected people may only experience mild attacks of vomiting with normal development, while others experience failure to thrive with severe intellectual disability and early death. The Human Phenotype Ontology provides the following list of signs and symptoms for 3-Hydroxyisobutyric aciduria. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Aminoaciduria 90% Abnormality of the outer ear 50% Long philtrum 50% Triangular face 50% Aplasia/Hypoplasia of the cerebellum 7.5% Aplasia/Hypoplasia of the corpus callosum 7.5% Cerebral calcification 7.5% Cerebral cortical atrophy 7.5% Intrauterine growth retardation 7.5% Microcephaly 7.5% Seizures 7.5% Sloping forehead 7.5% Ventriculomegaly 7.5% Abnormal facial shape - Abnormality of neuronal migration - Autosomal recessive inheritance - Congenital intracerebral calcification - Episodic ketoacidosis - Failure to thrive - Lactic acidosis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.