Measuring blood pressure with a low pressure of 85 mmHg in the left hand and 95 mmHg in the right hand is generally normal, but it can also be caused by arterial pathology, because generally there cannot be a difference of 20 mmHg for high pressure and 10 mmHg for low pressure. Since the right brachial artery is thicker than the left and closer to the heart, the right side has a higher blood pressure than the left. Also, most people are right-handed, so blood pressure is slightly higher on the right than on the left. Arterial diseases such as aortitis, arterial embolism or arteriosclerosis resulting in narrowing of the arteries in the upper limbs can also lead to a difference in blood pressure between the two hands, and the patient will experience symptoms such as numbness and pain on the affected side, which will require a timely visit to the hospital. If the blood pressure of the left hand is 85 and the right hand is 95, and the difference between the two hands is large, it is recommended that the patient go to the hospital in time to check the cause of the disease under the diagnosis of the doctor, and timely treatment.