Taking care of a disabled child may require some financial sacrifice. There are certainly tax breaks available as discussed below and many of these will apply to adult children as well as minors. Depending on your specific circumstances and your province of residence there may also be government financial support available. Each province is different. For example, in Ontario the Ontario Disability Support Program provides financial and employment support for eligible disabled persons over the age of 18. Eligibility is income tested and determined on a case-by-case basis.
Depending on where you live, there may be local programs directed at disabled children such as sports or social activities. For example, the Mississauga Synchronized Swimming Association has a program for special needs athletes.