Itching at night, not during the day. Why?

Itching at night, but not itching during the day, may be caused by the following factors: 1, allergic diseases, such as eczema, dermatitis, etc. May be due to busy work during the day, did not cause attention, at night when the rest will be more obvious. 2, scabies infection, which has a relationship with biological characteristics, because female insects in the evening activities are more frequent, thus causing night itching.