Talk:Toshiro/@comment-99.203.15.18-20181204001524/@comment-38647872-20190329235737

delays in reaching development milestones – for example, not sitting by eight months or not walking by 18 months seeming too stiff or too floppy weak arms or legs fidgety, jerky or clumsy movements random, uncontrolled movements walking on tip-toes a range of other problems – such as swallowing difficulties, speaking problems, vision problems and learning disabilities

These are the symptoms, according to the NHS.