Dizziness, lightheadedness, insomnia at night need to further look for triggers to see if there are any of these factors in life: tiredness, work stress, mental stimulation, anxiety, upset, depression, if there are factors in this regard as much as possible to improve, if you can remove as much as possible to remove. If you are mentally stimulated and depressed today, relax, adjust your mind, and shift your attention. If these factors have been regulated to almost the same extent, and you still have the above symptoms at night, you need to pay attention to your sleep. Difficulty in falling asleep, sleep disorders can also cause dizziness, brain swelling, you can first adjust the work schedule, late to bed and early to rise, if also accompanied by dizziness can be given some symptomatic treatment. If the patient is an elderly person, it is necessary to further investigate whether there is insufficient blood supply to the cerebral arteries or narrowing of the cerebral blood vessels.