Main Clinical Features
● Hypotonia: Decreased muscle tone, typically present at birth but may be noticed later
● Spasticity:Increased muscle stiffness
● Dystonia: Sustained or intermittent involuntary muscle contractions causing abnormal postures or movements
● Developmental Delay/Intellectual Disability:Not meeting developmental milestones and lower than average cognitive functioning
Less common
● Respiratory/Swallowing Insufficiency:Impaired pulmonary function and dysphagia, increasing risk of aspiration and respiratory complications
● Oculomotor Dysfunction: Abnormalities in eye movement control, such as impaired tracking and saccades
● Seizures:Episodes of abnormal electrical activity in the brain presenting as convulsions, staring spells, or other neurological events
