I think this person wanted to trigger the part here: "or a person who cannot physically or mentally take care of his or herself."

The Child and Dependent Care Credit is for Care; Treatment is Medical.

"You may be able to claim the child and dependent care credit if you paid expenses for the care of a qualifying individual to enable you (and your spouse, if filing a joint return) to work or actively look for work."

Read what the IRS has to state:

https://www.irs.gov/taxtopics/tc602