Imagine, if you can, sensory overwhelm so complete and dark it causes you to turn in on yourself, to refuse to engage with the world, to self harm and physically attack those around you; your caregivers at a loss, their depression honed through years of coming up against brick walls, relentless, from their own children, and the institutions which are supposed to support them.
Imagine if you can being told that each institution cannot or will not deal with those children – the headmaster who gently explains he has a school of 1,500 pupils and cannot (will not, cannot afford to) meaningfully meet their needs.