Is the term used to describe the unequal and differential treatment experienced by those with a disability.

Handicapism.

Explanation:

Handicapism may be defined as the set of practices and theory that promotes the unjust and unequal treatment of the people. This might be considered equal to the racism.

The individual that suffers from any physical or mental disability are treated unequal. Handicapism thinks that disabled people dependent on other people and they are not able to live their life independently irrespective of their potential.

Thus, the answer is handicapism.