潰瘍
かいよう
☆ noun (common) (futsuumeishi)
◆ ulcer
An ulcer forms in the stomach.
薬を飲み始めると、すぐに痛みなどの症状はとれてきますが、すぐに潰瘍がなおるわけではありません。
When you start taking medicine it begins working on symptoms, like pain, rightaway, but that doesn't mean that the ulcer heals right away.