CoteDAzur, taking a test and living with a disability are not the same thing.
For your information, my Asperger syndrome is not just me having difficulty in deciphering social situations & facial expressions. It has had a profound effect on every part of my life from the earliest of ages, much like being both blind and deaf to people. The immeasurable fear, the sensory overload, the need for repetition and routine, the treatment society deals out to us....only 1 in 7 of us has a full time job. Most live in poverty. Many end up with mental illness from the sheer unremitting strain on us. Many end up using drugs or alcohol as the only way to survive day to day because of the pressures that society puts on us in making us work and live in environments that hurt like hell.
I've experienced bullying, depression, anxiety, fraud, sexual abuse, and have been unable to access things that others take absolutely for granted - church services, training courses, etc.
Can I please suggest that you do some research and actually listen to us before likening all of that to a bruise? I have had a bruise. For example the ones dealt out to me by bullies. It's nothing like a bruise at all.
As for the children who sit and bang their heads, I'd say 90% of it is being put in an environment that 'hurts' like hell. The difference? I can tell people about it and move away from it, sometimes. They can't, bless them. It doesn't mean they all need eliminating.
What we need is effective therapies and treatments and support.