All patients with polymicrogyria (PMG) have speech and language impairment, with speech disorder being most prominent in those who have perisylvian PMG.
Why this matters
Recent advances in neuroimaging have revolutionized the diagnosis of PMG and causative genes have provided neurobiological insights.
Most speech and language studies in PMG have focused on children with higher-level abilities who are able to complete a verbal assessment. Because speech and language difficulties are frequent in PMG, these studies do not depict the full spectrum of abilities seen in PMG.