According to your statement, it is possible that you are allergic, usually if you have contacted any special things are also like this, it is easier to determine what is caused by, from what you said to eat the medicine to dispel dampness after a slight effect, it may suggest that your own constitution is biased towards damp-heat body.

Guidance:

1, it is recommended to go to the Department of Traditional Chinese Medicine after the dialectic medication, for this kind of unexplained itch Chinese medicine will have a lot of methods of treatment, the effect is also more effective.

2, necessary to go to the dermatology department to check allergens.

2, necessary to go to the dermatology check allergens.