Sleep on the body in the evening, the skin is caught entirely what reason is this

The skin is scratched may be caused by local skin itching, may also be the presence of a large number of mites on the bed, contact with animal fur products or feather products caused by local skin allergies. The presence of dermatitis, eczema and other skin diseases patients, will also appear this symptom. Suggestions: you'd better not scratch the skin, so as not to cause infection.