It took me almost half a month to get rid of it. It is normal. Don't worry.
I used vitamin e from my mother's health house, which is the kind of capsule. I cut it open and apply it to the allergic place, and gently massage it to make it completely absorbed. Just use one. Apply 1-2 times a day until it doesn't itch.
Don't eat hot and sour food, it will make you feel worse.
And don't scratch, hold back, or it will itch more.
Do not apply hot or cold compress.