"how do you feel now?" => 이제 (좀) 어떠세요? "You still pain?" => Are you still in pain? => 아직(도) (많이) 편찮으세요? (polite) => 아직(도) (많이) 아파? / 아직(도) (많이) 아프니? (casual between friends) "get better?" => 나아지다. => 좋아지다. ""Have you gotten any better?" => 좀 나아지셨나요? (polite) => 좀 나아? / 좀 낫니? (casual) => 좀 나았어? / 좀 나았니? (casual) "pain increase?/decrease?" => 상태가 나빠지다 (condition) gets worse => 상태가 나아지다 / 상태가 좋아지다 (condition) gets better => 아픈 게 심해지다 / 아픈 게 더해지다 pain increases => 아픈 게 덜해지다 pain decreases

"If I want to ask patients/a patient who/that come/comes to the hospital (I work at)"

Just some small corrections, since I see you're learning English as well: "How do you feel now?" or "How are you feeling?", "Are you still in pain?" or "Does it still hurt?" (if a specific body part is hurt, like an arm or a leg), "Do you feel [any] better?" or "Have you gotten any better?", "Has the pain increased or decreased?", and "How do you say these [sentences/phrases] in Korean?"