Urgent! My sister has many corns on her toes. Crying and screaming in pain. Father was distressed and angry, and scolded his sister for hitting her every day. what can I do?

The drugstore has corn stickers. You can put the red ones anywhere, and change them every three or four days. The red medicine in the picture is corrosive, but it doesn't hurt. Don't be afraid. Some are good once, and some are completely changed after two or three times. My old corn was removed. You can look at my picture and go to the drugstore for consultation. It is very cheap.