I'm not thinking straight. What happened?

1, severe lack of sleep if the

recent work pressure is too large, nervous or living room environment is too noisy, affecting sleep, long-term lack of sleep can lead to temporary lack of blood supply to the brain, and then appear not clear mind, dizziness, weakness and other symptoms, generally after supplementing sleep can be alleviated.

2, mental weakness

neurasthenia is not psychological factors, mental work and other reasons, patients can repeatedly appear not clear mind, slow response, attention can not concentrate and other symptoms.

3, upper respiratory tract infection

is not bacteria, viruses and other pathogens infection, patients can feel confused, general weakness, fever, cough and so on.