isabled child allowance (up to age 18)
Benefit levels: 50% or 100% or 188%
Documents required for application:
1. Claim Form for Disabled Child Allowance (Online Fill-in Printable Form)
2. Up-to-date medical documents about the child's medical and functional condition.
Additional documents depending on the disability or illness from which the child suffers.
After submitting the documents, there is a medical committee in which the child's medical condition is examined - in the presence of the parents

For more details -Click here 
–Claim for benefit Click here
online form -Click here