Allergic dermatitis can not eat the main food is to include the following categories: first, tobacco and alcohol; second, some spicy, stimulating food; third, seafood, beef and mutton, chicken and duck; fourth, eggs and milk; fifth, raw onion, ginger, garlic; sixth, leek, celery, wild vegetables and other so-called hairy things; seventh, strong tea and coffee. These patients should pay attention to all of the above, but of course this is different from person to person. There are some people who have eaten these may not have a significant reaction to aggravate, but for most people, this still needs attention to avoid. In addition, allergic dermatitis also depends on the specific location, such as in the face, you may also need to avoid the external cosmetics.