"Він дуже хворий і потребує багато догляду."

he is very ill and needs a lot of treatment. Зі словаря кембріджа: treatment noun (MEDICAL CARE) B2 [ C or U ] the use of drugs, exercises, etc. to cure a person of an illness or injury: free dental treatment Perhaps it's time to try a new course of treatment This disease doesn't generally respond to (= improve as a result of) treatment. There are various treatments for this complaint.