Up to 21 years of age, children with disabilities may receive additional family allowances where:
- the disability has physical or mental consequences;
- disability affects the child's daily activities (mobility, learning ability, personal hygiene, etc.);
- disability has consequences for the household (medical treatment, necessary travel, adaptation of the environment, ...).
- They are paid by your family allowance fund or your social insurance fund
For more information: http://handicap.belgium.be/fr/mes-droits/allocations-familiales-supplementaires.htm