Total 26 clinical symptoms reported for Hypomyelinating leukodystrophy 6 
Developmental regression Loss of developmental skills, as manifested by loss of developmental milestones.
 
Synonyms:Loss of acquired milestones; Loss of developmental milestones; Loss of milestones; Mental deterioration in childhood; Neurodevelopmental regression; Psychomotor regression; Psychomotor regression beginning in infancy; Psychomotor regression in infants; Psychomotor regression, progressive
Very frequent
Dysarthria 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.
 
Synonyms:Difficulty articulating speech; Dysarthric speech
Very frequent
Dystonia 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.
 
Synonyms:Dystonic movements
Very frequent
Leukodystrophy Leukodystrophy refers to deterioration of white matter of the brain resulting from degeneration of myelin sheaths in the CNS. Their basic defect is directly related to the synthesis and maintenance of myelin membranes. Symmetric white matter involvement at MRI is a typical finding in patients with leukodystrophies.
 
Synonyms:Degeneration of white matter of brain
Very frequent
Rigidity Continuous involuntary sustained muscle contraction. When an affected muscle is passively stretched, the degree of resistance remains constant regardless of the rate at which the muscle is stretched. This feature helps to distinguish rigidity from muscle spasticity.
 
Synonyms:Muscle rigidity; Rigidity
Very frequent
Spasticity A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.
 
Synonyms:Involuntary muscle stiffness, contraction, or spasm; Muscle spasticity; Muscular spasticity
Very frequent