treatment

Noun

(countable & uncountable) A treatment is an action, usually by a doctor, to make somebody healthy.
He has had treatments every day since he hurt his neck.

My sister is undergoing treatment for breast cancer.
(uncountable) The treatment that you give someone or something is the way that you act toward it.
The treatment that I have received since beginning this job has been terrible. My boss yells at me every day and nobody is friendly at all.