There are no credits for a child with a disability.
If the child was over the age 18, permanently and totally disabled, you could claim the child as a dependent under the Qualifying Child rules instead of the Qualifying Relative rules.
Your child is permanently and totally disabled if both of the following apply: The child cannot engage in any substantial gainful activity because of a physical or mental condition and a doctor determines the condition has lasted or can be expected to last at least a year or lead to death.
