Blood pressure 120/85 in the normal range, confusion may be physiological conditions, suffering from lung disease or heart disease. 1. Physiological situation: the normal range of blood pressure systolic blood pressure is 90~139mmHg, diastolic blood pressure is 60~89mmHg, the pulse pressure difference is 30~40mmHg, when the patient’s life is too much pressure or mental long-term tension and lead to sleep deprivation, there can be inattentiveness, confusion and so on, the patient needs to actively deal with the pressure of life, regular work and rest, and adjust the mood through appropriate exercise, and so on. 2. Lung disease: chronic obstructive pulmonary disease (COPD) in elderly patients and chronic pneumonia in middle-aged people can cause insufficient oxygen supply to the brain, leading to reduced energy consumption in the brain, which can lead to confusion and other symptoms. Patients need to consult a doctor in time to identify the cause of the disease, under the guidance of the doctor to take salbutamol, amoxicillin, clindamycin and other drugs. 3. heart disease: such as chronic heart failure patients, early often no change in blood pressure or changes in the small, the emergence of symptoms more nonspecific, can appear irritable, fuzzy, etc., the patient needs to consult a doctor in a timely manner, in accordance with the doctor’s instructions to take propranolol, metoprolol, captopril and other medication! When confusion occurs, you need to actively do their own psychological and physiological adjustments, symptoms persist or worsening need to consult a doctor in time to identify the cause of the disease.